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Finding the Fourth Proportional to 91,304.70, 136,970.01 and 28,129.95

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Solution

The fourth proportional to 91,304.70, 136,970.01 and 28,129.95 is: 42,198.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.70 : 136,970.01 = 28,129.95 : x
  2. Step 2: Convert to fraction form
    91,304.70/136,970.01 = 28,129.95/x
  3. Step 3: Cross multiply
    91,304.70x = 136,970.01 × 28,129.95
  4. Step 4: Simplify right side
    91,304.70x = 3,852,959,532.80
  5. Step 5: Solve for x
    x = 3,852,959,532.80/91,304.70
  6. Step 6: Final answer
    x = 42,198.92

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