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Finding the Fourth Proportional to 77,891.92, 107,490.71 and 42,081.82

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Solution

The fourth proportional to 77,891.92, 107,490.71 and 42,081.82 is: 58,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.92 : 107,490.71 = 42,081.82 : x
  2. Step 2: Convert to fraction form
    77,891.92/107,490.71 = 42,081.82/x
  3. Step 3: Cross multiply
    77,891.92x = 107,490.71 × 42,081.82
  4. Step 4: Simplify right side
    77,891.92x = 4,523,404,172.44
  5. Step 5: Solve for x
    x = 4,523,404,172.44/77,891.92
  6. Step 6: Final answer
    x = 58,072.83

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