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Finding the Fourth Proportional to 111,948.10, 167,922.15 and 86,578.90

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Solution

The fourth proportional to 111,948.10, 167,922.15 and 86,578.90 is: 129,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,948.10 : 167,922.15 = 86,578.90 : x
  2. Step 2: Convert to fraction form
    111,948.10/167,922.15 = 86,578.90/x
  3. Step 3: Cross multiply
    111,948.10x = 167,922.15 × 86,578.90
  4. Step 4: Simplify right side
    111,948.10x = 14,538,515,032.64
  5. Step 5: Solve for x
    x = 14,538,515,032.64/111,948.10
  6. Step 6: Final answer
    x = 129,868.35

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