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Finding the Fourth Proportional to 71,961.52, 99,218.64 and 59,170

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Solution

The fourth proportional to 71,961.52, 99,218.64 and 59,170 is: 81,582.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.52 : 99,218.64 = 59,170 : x
  2. Step 2: Convert to fraction form
    71,961.52/99,218.64 = 59,170/x
  3. Step 3: Cross multiply
    71,961.52x = 99,218.64 × 59,170
  4. Step 4: Simplify right side
    71,961.52x = 5,870,766,928.80
  5. Step 5: Solve for x
    x = 5,870,766,928.80/71,961.52
  6. Step 6: Final answer
    x = 81,582.03

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