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Finding the Fourth Proportional to 278,103.58, 417,156.05 and 78,425.02

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Solution

The fourth proportional to 278,103.58, 417,156.05 and 78,425.02 is: 117,637.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,103.58 : 417,156.05 = 78,425.02 : x
  2. Step 2: Convert to fraction form
    278,103.58/417,156.05 = 78,425.02/x
  3. Step 3: Cross multiply
    278,103.58x = 417,156.05 × 78,425.02
  4. Step 4: Simplify right side
    278,103.58x = 32,715,469,086.47
  5. Step 5: Solve for x
    x = 32,715,469,086.47/278,103.58
  6. Step 6: Final answer
    x = 117,637.71

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