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Finding the Fourth Proportional to 91,679.70, 137,306.31 and 89,157.15

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Solution

The fourth proportional to 91,679.70, 137,306.31 and 89,157.15 is: 133,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,679.70 : 137,306.31 = 89,157.15 : x
  2. Step 2: Convert to fraction form
    91,679.70/137,306.31 = 89,157.15/x
  3. Step 3: Cross multiply
    91,679.70x = 137,306.31 × 89,157.15
  4. Step 4: Simplify right side
    91,679.70x = 12,241,839,457.18
  5. Step 5: Solve for x
    x = 12,241,839,457.18/91,679.70
  6. Step 6: Final answer
    x = 133,528.36

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