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Finding the Fourth Proportional to 72,665.58, 108,997.29 and 20,073.90

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Solution

The fourth proportional to 72,665.58, 108,997.29 and 20,073.90 is: 30,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,665.58 : 108,997.29 = 20,073.90 : x
  2. Step 2: Convert to fraction form
    72,665.58/108,997.29 = 20,073.90/x
  3. Step 3: Cross multiply
    72,665.58x = 108,997.29 × 20,073.90
  4. Step 4: Simplify right side
    72,665.58x = 2,188,000,699.73
  5. Step 5: Solve for x
    x = 2,188,000,699.73/72,665.58
  6. Step 6: Final answer
    x = 30,110.55

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