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Finding the Fourth Proportional to 123,880.41, 171,025.79 and 81,561.96

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Solution

The fourth proportional to 123,880.41, 171,025.79 and 81,561.96 is: 112,602.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,880.41 : 171,025.79 = 81,561.96 : x
  2. Step 2: Convert to fraction form
    123,880.41/171,025.79 = 81,561.96/x
  3. Step 3: Cross multiply
    123,880.41x = 171,025.79 × 81,561.96
  4. Step 4: Simplify right side
    123,880.41x = 13,949,198,642.95
  5. Step 5: Solve for x
    x = 13,949,198,642.95/123,880.41
  6. Step 6: Final answer
    x = 112,602.13

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