Dayton man on Forbes’ billionaire rankings list

Microsoft co-founder Bill Gates is back on top of the list of the world’s richest people after a four-year hiatus.

Forbes magazine announced its ranking of the world’s billionaires Monday.

Dayton native Clayton Mathile ranked 273 on the list with a net worth of $2 billion, according to the magazine. Mathile sold pet food maker Iams to Procter & Gamble in 1999 for $2.3 billion and now spends his his time trying to help other entrepreneurs. Mathile joined Iams in 1970, when it had just five employees, and 12 years later, he bought the company from founder Paul Iams. At the time it was a regional pet food supplier with revenues of $12.5 million

Gates, who led the list for 15 of the past 20 years, won the spot back from Mexican telecom mogul Carlos Slim Helu, who had topped the list for the past four years. Gates’ net worth is estimated at $76 billion; Helu follows at $72 billion.

Spanish clothing magnate Amancio Ortega, known for the Zara retail chain, maintained his third-ranked spot and came out ahead of famed U.S. investor Warren Buffett, who ranked fourth. Larry Ellison of Oracle came in fifth.

Forbes says a record 1,645 billionaires made the list this year, with an average net worth of $4.7 billion.