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Finding the Fourth Proportional to 78,199.38, 117,304.56 and 31,452.48

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Solution

The fourth proportional to 78,199.38, 117,304.56 and 31,452.48 is: 47,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.38 : 117,304.56 = 31,452.48 : x
  2. Step 2: Convert to fraction form
    78,199.38/117,304.56 = 31,452.48/x
  3. Step 3: Cross multiply
    78,199.38x = 117,304.56 × 31,452.48
  4. Step 4: Simplify right side
    78,199.38x = 3,689,519,327.31
  5. Step 5: Solve for x
    x = 3,689,519,327.31/78,199.38
  6. Step 6: Final answer
    x = 47,180.93

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