The richest American: Bill Gates
Net Worth: $76 billion
Forbes Rank: 1With a net worth of $76 billion, the Microsoft Corporation co-founder reclaimed the top spot after a four-year hiatus, toppling Mexico's telecommunications mogul Carlos Slim Helu. Bill Gates, bounced back mostly because of rise in the company's stocks. After years focused on his philanthropy, Gates plans to spend more of his time working with product managers at Microsoft as rivals like Google and Apple continue to outshine the company in the market.