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Finding the Fourth Proportional to 105,617.26, 145,751.78 and 57,872.42

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Solution

The fourth proportional to 105,617.26, 145,751.78 and 57,872.42 is: 79,863.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,617.26 : 145,751.78 = 57,872.42 : x
  2. Step 2: Convert to fraction form
    105,617.26/145,751.78 = 57,872.42/x
  3. Step 3: Cross multiply
    105,617.26x = 145,751.78 × 57,872.42
  4. Step 4: Simplify right side
    105,617.26x = 8,435,008,227.91
  5. Step 5: Solve for x
    x = 8,435,008,227.91/105,617.26
  6. Step 6: Final answer
    x = 79,863.92

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