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Finding the Fourth Proportional to 123,584.80, 170,610.24 and 78,309.76

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Solution

The fourth proportional to 123,584.80, 170,610.24 and 78,309.76 is: 108,107.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,584.80 : 170,610.24 = 78,309.76 : x
  2. Step 2: Convert to fraction form
    123,584.80/170,610.24 = 78,309.76/x
  3. Step 3: Cross multiply
    123,584.80x = 170,610.24 × 78,309.76
  4. Step 4: Simplify right side
    123,584.80x = 13,360,446,947.94
  5. Step 5: Solve for x
    x = 13,360,446,947.94/123,584.80
  6. Step 6: Final answer
    x = 108,107.53

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