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Finding the Fourth Proportional to 93,728.80, 140,593.20 and 31,399.30

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Solution

The fourth proportional to 93,728.80, 140,593.20 and 31,399.30 is: 47,098.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,728.80 : 140,593.20 = 31,399.30 : x
  2. Step 2: Convert to fraction form
    93,728.80/140,593.20 = 31,399.30/x
  3. Step 3: Cross multiply
    93,728.80x = 140,593.20 × 31,399.30
  4. Step 4: Simplify right side
    93,728.80x = 4,414,528,064.76
  5. Step 5: Solve for x
    x = 4,414,528,064.76/93,728.80
  6. Step 6: Final answer
    x = 47,098.95

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