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Finding the Fourth Proportional to 87,609.78, 131,418.90 and 24,429.78

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Solution

The fourth proportional to 87,609.78, 131,418.90 and 24,429.78 is: 36,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,609.78 : 131,418.90 = 24,429.78 : x
  2. Step 2: Convert to fraction form
    87,609.78/131,418.90 = 24,429.78/x
  3. Step 3: Cross multiply
    87,609.78x = 131,418.90 × 24,429.78
  4. Step 4: Simplify right side
    87,609.78x = 3,210,534,814.84
  5. Step 5: Solve for x
    x = 3,210,534,814.84/87,609.78
  6. Step 6: Final answer
    x = 36,645.85

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