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Finding the Fourth Proportional to 78,380.13, 108,165.36 and 42,570.84

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Solution

The fourth proportional to 78,380.13, 108,165.36 and 42,570.84 is: 58,748.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,380.13 : 108,165.36 = 42,570.84 : x
  2. Step 2: Convert to fraction form
    78,380.13/108,165.36 = 42,570.84/x
  3. Step 3: Cross multiply
    78,380.13x = 108,165.36 × 42,570.84
  4. Step 4: Simplify right side
    78,380.13x = 4,604,690,234.10
  5. Step 5: Solve for x
    x = 4,604,690,234.10/78,380.13
  6. Step 6: Final answer
    x = 58,748.18

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