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Finding the Fourth Proportional to 123,729.47, 170,747.13 and 67,140.84

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Solution

The fourth proportional to 123,729.47, 170,747.13 and 67,140.84 is: 92,654.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,729.47 : 170,747.13 = 67,140.84 : x
  2. Step 2: Convert to fraction form
    123,729.47/170,747.13 = 67,140.84/x
  3. Step 3: Cross multiply
    123,729.47x = 170,747.13 × 67,140.84
  4. Step 4: Simplify right side
    123,729.47x = 11,464,105,735.79
  5. Step 5: Solve for x
    x = 11,464,105,735.79/123,729.47
  6. Step 6: Final answer
    x = 92,654.61

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