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Finding the Fourth Proportional to 87,086.18, 120,066.13 and 56,404.69

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Solution

The fourth proportional to 87,086.18, 120,066.13 and 56,404.69 is: 77,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,086.18 : 120,066.13 = 56,404.69 : x
  2. Step 2: Convert to fraction form
    87,086.18/120,066.13 = 56,404.69/x
  3. Step 3: Cross multiply
    87,086.18x = 120,066.13 × 56,404.69
  4. Step 4: Simplify right side
    87,086.18x = 6,772,292,842.15
  5. Step 5: Solve for x
    x = 6,772,292,842.15/87,086.18
  6. Step 6: Final answer
    x = 77,765.41

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