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Finding the Fourth Proportional to 76,708.89, 114,988.95 and 39,286.62

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Solution

The fourth proportional to 76,708.89, 114,988.95 and 39,286.62 is: 58,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,708.89 : 114,988.95 = 39,286.62 : x
  2. Step 2: Convert to fraction form
    76,708.89/114,988.95 = 39,286.62/x
  3. Step 3: Cross multiply
    76,708.89x = 114,988.95 × 39,286.62
  4. Step 4: Simplify right side
    76,708.89x = 4,517,527,182.85
  5. Step 5: Solve for x
    x = 4,517,527,182.85/76,708.89
  6. Step 6: Final answer
    x = 58,891.83

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