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Finding the Fourth Proportional to 120,639.54, 166,469.14 and 66,911.10

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Solution

The fourth proportional to 120,639.54, 166,469.14 and 66,911.10 is: 92,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639.54 : 166,469.14 = 66,911.10 : x
  2. Step 2: Convert to fraction form
    120,639.54/166,469.14 = 66,911.10/x
  3. Step 3: Cross multiply
    120,639.54x = 166,469.14 × 66,911.10
  4. Step 4: Simplify right side
    120,639.54x = 11,138,633,273.45
  5. Step 5: Solve for x
    x = 11,138,633,273.45/120,639.54
  6. Step 6: Final answer
    x = 92,329.87

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