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Finding the Fourth Proportional to 66,503.53, 99,755.40 and 53,260.75

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Solution

The fourth proportional to 66,503.53, 99,755.40 and 53,260.75 is: 79,891.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,503.53 : 99,755.40 = 53,260.75 : x
  2. Step 2: Convert to fraction form
    66,503.53/99,755.40 = 53,260.75/x
  3. Step 3: Cross multiply
    66,503.53x = 99,755.40 × 53,260.75
  4. Step 4: Simplify right side
    66,503.53x = 5,313,047,304.31
  5. Step 5: Solve for x
    x = 5,313,047,304.31/66,503.53
  6. Step 6: Final answer
    x = 79,891.21

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