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Finding the Fourth Proportional to 66,560.28, 99,791.16 and 31,458.96

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Solution

The fourth proportional to 66,560.28, 99,791.16 and 31,458.96 is: 47,165.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,560.28 : 99,791.16 = 31,458.96 : x
  2. Step 2: Convert to fraction form
    66,560.28/99,791.16 = 31,458.96/x
  3. Step 3: Cross multiply
    66,560.28x = 99,791.16 × 31,458.96
  4. Step 4: Simplify right side
    66,560.28x = 3,139,326,110.79
  5. Step 5: Solve for x
    x = 3,139,326,110.79/66,560.28
  6. Step 6: Final answer
    x = 47,165.16

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