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Finding the Fourth Proportional to 78,680.55, 108,575.28 and 42,868.41

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Solution

The fourth proportional to 78,680.55, 108,575.28 and 42,868.41 is: 59,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.55 : 108,575.28 = 42,868.41 : x
  2. Step 2: Convert to fraction form
    78,680.55/108,575.28 = 42,868.41/x
  3. Step 3: Cross multiply
    78,680.55x = 108,575.28 × 42,868.41
  4. Step 4: Simplify right side
    78,680.55x = 4,654,449,618.90
  5. Step 5: Solve for x
    x = 4,654,449,618.90/78,680.55
  6. Step 6: Final answer
    x = 59,156.29

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