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Finding the Fourth Proportional to 99,661.23, 137,544.17 and 56,647.19

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Solution

The fourth proportional to 99,661.23, 137,544.17 and 56,647.19 is: 78,179.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.23 : 137,544.17 = 56,647.19 : x
  2. Step 2: Convert to fraction form
    99,661.23/137,544.17 = 56,647.19/x
  3. Step 3: Cross multiply
    99,661.23x = 137,544.17 × 56,647.19
  4. Step 4: Simplify right side
    99,661.23x = 7,791,490,103.71
  5. Step 5: Solve for x
    x = 7,791,490,103.71/99,661.23
  6. Step 6: Final answer
    x = 78,179.75

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