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Finding the Fourth Proportional to 115,917.80, 173,876.70 and 56,791.40

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Solution

The fourth proportional to 115,917.80, 173,876.70 and 56,791.40 is: 85,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,917.80 : 173,876.70 = 56,791.40 : x
  2. Step 2: Convert to fraction form
    115,917.80/173,876.70 = 56,791.40/x
  3. Step 3: Cross multiply
    115,917.80x = 173,876.70 × 56,791.40
  4. Step 4: Simplify right side
    115,917.80x = 9,874,701,220.38
  5. Step 5: Solve for x
    x = 9,874,701,220.38/115,917.80
  6. Step 6: Final answer
    x = 85,187.10

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