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Finding the Fourth Proportional to 85,853.67, 118,478.41 and 47,616.78

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Solution

The fourth proportional to 85,853.67, 118,478.41 and 47,616.78 is: 65,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,853.67 : 118,478.41 = 47,616.78 : x
  2. Step 2: Convert to fraction form
    85,853.67/118,478.41 = 47,616.78/x
  3. Step 3: Cross multiply
    85,853.67x = 118,478.41 × 47,616.78
  4. Step 4: Simplify right side
    85,853.67x = 5,641,560,708.97
  5. Step 5: Solve for x
    x = 5,641,560,708.97/85,853.67
  6. Step 6: Final answer
    x = 65,711.35

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