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Finding the Fourth Proportional to 78,308.56, 108,065.86 and 42,498.56

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Solution

The fourth proportional to 78,308.56, 108,065.86 and 42,498.56 is: 58,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308.56 : 108,065.86 = 42,498.56 : x
  2. Step 2: Convert to fraction form
    78,308.56/108,065.86 = 42,498.56/x
  3. Step 3: Cross multiply
    78,308.56x = 108,065.86 × 42,498.56
  4. Step 4: Simplify right side
    78,308.56x = 4,592,643,230.26
  5. Step 5: Solve for x
    x = 4,592,643,230.26/78,308.56
  6. Step 6: Final answer
    x = 58,648.04

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