How much is $900 million in 1913 worth today?

John D. Rockefeller's net worth reached its zenith in 1913, when it stood at approximately $900 million. This figure is equivalent to a staggering $15 billion in today's currency, reflecting the immense wealth he had accumulated over his lifetime.

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Rockefeller's fortune represented a significant portion of the nation's economy during his time. According to Ron Chernow, author of "Titan: The Life of John D.," Rockefeller's net worth amounted to an astonishing 2.5% of the gross domestic product of the United States in 1911.

Rockefeller's success was built on his unparalleled business acumen and his ability to dominate the oil industry. He founded the Standard Oil Company, which became a monopoly in the industry, allowing him to amass his fortune.

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