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Finding the Fourth Proportional to 139,428.52, 192,418.70 and 79,010.88

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Solution

The fourth proportional to 139,428.52, 192,418.70 and 79,010.88 is: 109,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,428.52 : 192,418.70 = 79,010.88 : x
  2. Step 2: Convert to fraction form
    139,428.52/192,418.70 = 79,010.88/x
  3. Step 3: Cross multiply
    139,428.52x = 192,418.70 × 79,010.88
  4. Step 4: Simplify right side
    139,428.52x = 15,203,170,815.46
  5. Step 5: Solve for x
    x = 15,203,170,815.46/139,428.52
  6. Step 6: Final answer
    x = 109,039.18

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