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Finding the Fourth Proportional to 78,678.54, 117,862.29 and 37,154.70

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Solution

The fourth proportional to 78,678.54, 117,862.29 and 37,154.70 is: 55,658.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,678.54 : 117,862.29 = 37,154.70 : x
  2. Step 2: Convert to fraction form
    78,678.54/117,862.29 = 37,154.70/x
  3. Step 3: Cross multiply
    78,678.54x = 117,862.29 × 37,154.70
  4. Step 4: Simplify right side
    78,678.54x = 4,379,138,026.26
  5. Step 5: Solve for x
    x = 4,379,138,026.26/78,678.54
  6. Step 6: Final answer
    x = 55,658.61

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