Software - ZDNet Australia By:Michelle Nichols, AAP
21 September 2007 Microsoft founder Bill Gates is the richest person in America for the 14th year in a row, with Oracle chief Larry Ellison at number four and Google's founders Sergey Brin and Larry Page in fifth place.
Bill Gates fortune grew by US$6 billion in the past year (aprox US$115 million a week), according to Forbes. Second on the list was investor Warren Buffet -- who has pledged 85 percent of his net worth to the Bill and Melinda Gates Foundation and family charities -- is worth US$52 billion.
Michael Dell, chief executive of Dell Inc, the world's second-largest PC maker, was number eight on the list with a fortune of US$17.2 billion.
Casino magnate Sheldon Adelson (US$28 billion), head of Las Vegas Sands Corp, and software tycoon Larry Ellison (US$26 billion), chief executive of Oracle Corp, remain at third and fourth on the 25th annual ranking of 400 rich Americans, which now requires a minimum net worth of US$1.3 billion for inclusion.
"The collective net worth of those listed on the 400 this year rose US$290 billion to US$1.54 trillion," Forbes said. "Despite market jitters, nearly half of the 45 new members come from hedge fund and private equity investments."
For the first time since 1989 there are no members of the Walton family, descendants of Wal-Mart Stores Inc founder Sam Walton, in the top 10. Four members -- Jim, Christy, Robson and Alice -- slipped to 12th and 15th place.
The Waltons were displaced by Google co-founders Sergey Brin and Larry Page, who came in at number five with fortunes of US$18.5 billion, and brothers Charles and David Koch, who run Koch Industries, the world's second largest private company, and are each valued at US$17 billion, earning them 9th place.
Investor Kirk Kerkorian was the biggest gainer on the list, his fortune rising by more than US$9 billion in the past year to US$18 billion. He debuted in the top 10 at No 7 - up from No 26 last year.
Of the top 400 richest Americans, Forbes said 270 were entirely self-made, 74 inherited their wealth and 39 are women. There were 82 American billionaires who did not make the list.
The youngest member, and new to the list, is 33-year-old hedge fund manager John Arnold, who came in at number 317 with a US$1.5 billion wealth, while the oldest is 98-year-old John Simplot, valued at US$3.6 billion and 214th on the list.