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Finding the Fourth Proportional to 86,459.59, 129,702.80 and 36,539.90

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Solution

The fourth proportional to 86,459.59, 129,702.80 and 36,539.90 is: 54,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,459.59 : 129,702.80 = 36,539.90 : x
  2. Step 2: Convert to fraction form
    86,459.59/129,702.80 = 36,539.90/x
  3. Step 3: Cross multiply
    86,459.59x = 129,702.80 × 36,539.90
  4. Step 4: Simplify right side
    86,459.59x = 4,739,327,341.72
  5. Step 5: Solve for x
    x = 4,739,327,341.72/86,459.59
  6. Step 6: Final answer
    x = 54,815.52

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