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Finding the Fourth Proportional to 84,589.59, 126,884.39 and 28,429.70

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Solution

The fourth proportional to 84,589.59, 126,884.39 and 28,429.70 is: 42,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,589.59 : 126,884.39 = 28,429.70 : x
  2. Step 2: Convert to fraction form
    84,589.59/126,884.39 = 28,429.70/x
  3. Step 3: Cross multiply
    84,589.59x = 126,884.39 × 28,429.70
  4. Step 4: Simplify right side
    84,589.59x = 3,607,284,683.02
  5. Step 5: Solve for x
    x = 3,607,284,683.02/84,589.59
  6. Step 6: Final answer
    x = 42,644.55

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