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Finding the Fourth Proportional to 123,391.75, 185,087.64 and 40,285.75

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Solution

The fourth proportional to 123,391.75, 185,087.64 and 40,285.75 is: 60,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,391.75 : 185,087.64 = 40,285.75 : x
  2. Step 2: Convert to fraction form
    123,391.75/185,087.64 = 40,285.75/x
  3. Step 3: Cross multiply
    123,391.75x = 185,087.64 × 40,285.75
  4. Step 4: Simplify right side
    123,391.75x = 7,456,394,393.13
  5. Step 5: Solve for x
    x = 7,456,394,393.13/123,391.75
  6. Step 6: Final answer
    x = 60,428.63

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