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Forbes has estimated Rockefeller's wealth at greater than 300 billion dollars (adjusted to 2006). http://www.businessinsider.com/richest-people-in-history-2010

• tomhigg 12y ago
  Better explanation: "John D. Rockefeller, who became the world’s first billionaire in 1916, a sum equal to $30 billion today, adjusted for inflation. In a sense, this underestimates the oil scion’s wealth. By the time Rockefeller died in 1937, his assets equaled 1.5% of America’s total economic output. To control an equivalent share today would require a net worth of about $340 billion dollars, more than four times that of Bill Gates, currently the world’s richest man." http://www.forbes.com/sites/carlodonnell/2014/07/11/the-rockefellers-the-legacy-of-historys-richest-man/ http://www.forbes.com/sites/carlodonnell/2014/07/11/the-rock...