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Finding the Fourth Proportional to 67,985,621.90, 101,978,305.26 and 21,302,681.30

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Solution

The fourth proportional to 67,985,621.90, 101,978,305.26 and 21,302,681.30 is: 31,953,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,985,621.90 : 101,978,305.26 = 21,302,681.30 : x
  2. Step 2: Convert to fraction form
    67,985,621.90/101,978,305.26 = 21,302,681.30/x
  3. Step 3: Cross multiply
    67,985,621.90x = 101,978,305.26 × 21,302,681.30
  4. Step 4: Simplify right side
    67,985,621.90x = 2,172,411,336,467,893.75
  5. Step 5: Solve for x
    x = 2,172,411,336,467,893.75/67,985,621.90
  6. Step 6: Final answer
    x = 31,953,981.97

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