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Finding the Fourth Proportional to 71,604.92, 98,814.75 and 39,776.78

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Solution

The fourth proportional to 71,604.92, 98,814.75 and 39,776.78 is: 54,891.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,604.92 : 98,814.75 = 39,776.78 : x
  2. Step 2: Convert to fraction form
    71,604.92/98,814.75 = 39,776.78/x
  3. Step 3: Cross multiply
    71,604.92x = 98,814.75 × 39,776.78
  4. Step 4: Simplify right side
    71,604.92x = 3,930,532,571.51
  5. Step 5: Solve for x
    x = 3,930,532,571.51/71,604.92
  6. Step 6: Final answer
    x = 54,891.93

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