302. Bennett Dorrance
$2.7 billion @ self-made score: source: campbell soup
age: 71 residence: Paradise valley, ariz. The Campbell Soup heir sits on the board and has a 15% stake in the business his grandfather took over in 1914 after inventing its condensed-soup formula. He cofounded DMB Associates, a real estate development firm based in Scottsdale, Arizona, that builds master-planned communities.