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Finding the Fourth Proportional to 78,306.48, 108,063.75 and 42,496.80

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Solution

The fourth proportional to 78,306.48, 108,063.75 and 42,496.80 is: 58,646.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,306.48 : 108,063.75 = 42,496.80 : x
  2. Step 2: Convert to fraction form
    78,306.48/108,063.75 = 42,496.80/x
  3. Step 3: Cross multiply
    78,306.48x = 108,063.75 × 42,496.80
  4. Step 4: Simplify right side
    78,306.48x = 4,592,363,571
  5. Step 5: Solve for x
    x = 4,592,363,571/78,306.48
  6. Step 6: Final answer
    x = 58,646.02

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