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Finding the Fourth Proportional to 99,431.52, 137,217.15 and 54,111.41

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Solution

The fourth proportional to 99,431.52, 137,217.15 and 54,111.41 is: 74,674.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.52 : 137,217.15 = 54,111.41 : x
  2. Step 2: Convert to fraction form
    99,431.52/137,217.15 = 54,111.41/x
  3. Step 3: Cross multiply
    99,431.52x = 137,217.15 × 54,111.41
  4. Step 4: Simplify right side
    99,431.52x = 7,425,012,776.60
  5. Step 5: Solve for x
    x = 7,425,012,776.60/99,431.52
  6. Step 6: Final answer
    x = 74,674.64

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