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Finding the Fourth Proportional to 99,859.72, 137,807.22 and 55,147.72

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Solution

The fourth proportional to 99,859.72, 137,807.22 and 55,147.72 is: 76,104.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,859.72 : 137,807.22 = 55,147.72 : x
  2. Step 2: Convert to fraction form
    99,859.72/137,807.22 = 55,147.72/x
  3. Step 3: Cross multiply
    99,859.72x = 137,807.22 × 55,147.72
  4. Step 4: Simplify right side
    99,859.72x = 7,599,753,982.54
  5. Step 5: Solve for x
    x = 7,599,753,982.54/99,859.72
  6. Step 6: Final answer
    x = 76,104.30

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