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Finding the Fourth Proportional to 72,159.54, 99,515.67 and 45,304.56

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Solution

The fourth proportional to 72,159.54, 99,515.67 and 45,304.56 is: 62,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,159.54 : 99,515.67 = 45,304.56 : x
  2. Step 2: Convert to fraction form
    72,159.54/99,515.67 = 45,304.56/x
  3. Step 3: Cross multiply
    72,159.54x = 99,515.67 × 45,304.56
  4. Step 4: Simplify right side
    72,159.54x = 4,508,513,642.46
  5. Step 5: Solve for x
    x = 4,508,513,642.46/72,159.54
  6. Step 6: Final answer
    x = 62,479.80

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