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Finding the Fourth Proportional to 78,719.56, 118,078.92 and 19,555.24

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Solution

The fourth proportional to 78,719.56, 118,078.92 and 19,555.24 is: 29,332.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,719.56 : 118,078.92 = 19,555.24 : x
  2. Step 2: Convert to fraction form
    78,719.56/118,078.92 = 19,555.24/x
  3. Step 3: Cross multiply
    78,719.56x = 118,078.92 × 19,555.24
  4. Step 4: Simplify right side
    78,719.56x = 2,309,061,619.54
  5. Step 5: Solve for x
    x = 2,309,061,619.54/78,719.56
  6. Step 6: Final answer
    x = 29,332.76

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