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Finding the Fourth Proportional to 119,782,978.20, 165,301,008.12 and 64,778,834.70

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Solution

The fourth proportional to 119,782,978.20, 165,301,008.12 and 64,778,834.70 is: 89,395,061.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,782,978.20 : 165,301,008.12 = 64,778,834.70 : x
  2. Step 2: Convert to fraction form
    119,782,978.20/165,301,008.12 = 64,778,834.70/x
  3. Step 3: Cross multiply
    119,782,978.20x = 165,301,008.12 × 64,778,834.70
  4. Step 4: Simplify right side
    119,782,978.20x = 10,708,006,680,748,838
  5. Step 5: Solve for x
    x = 10,708,006,680,748,838/119,782,978.20
  6. Step 6: Final answer
    x = 89,395,061.32

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