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Finding the Fourth Proportional to 78,494.74, 117,725.63 and 25,891.90

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Solution

The fourth proportional to 78,494.74, 117,725.63 and 25,891.90 is: 38,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,494.74 : 117,725.63 = 25,891.90 : x
  2. Step 2: Convert to fraction form
    78,494.74/117,725.63 = 25,891.90/x
  3. Step 3: Cross multiply
    78,494.74x = 117,725.63 × 25,891.90
  4. Step 4: Simplify right side
    78,494.74x = 3,048,139,815.62
  5. Step 5: Solve for x
    x = 3,048,139,815.62/78,494.74
  6. Step 6: Final answer
    x = 38,832.41

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