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Finding the Fourth Proportional to 99,135.78, 148,747.68 and 40,086.78

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Solution

The fourth proportional to 99,135.78, 148,747.68 and 40,086.78 is: 60,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.78 : 148,747.68 = 40,086.78 : x
  2. Step 2: Convert to fraction form
    99,135.78/148,747.68 = 40,086.78/x
  3. Step 3: Cross multiply
    99,135.78x = 148,747.68 × 40,086.78
  4. Step 4: Simplify right side
    99,135.78x = 5,962,815,523.67
  5. Step 5: Solve for x
    x = 5,962,815,523.67/99,135.78
  6. Step 6: Final answer
    x = 60,147.97

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