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Finding the Fourth Proportional to 158,255.49, 218,392.92 and 86,639.97

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Solution

The fourth proportional to 158,255.49, 218,392.92 and 86,639.97 is: 119,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,255.49 : 218,392.92 = 86,639.97 : x
  2. Step 2: Convert to fraction form
    158,255.49/218,392.92 = 86,639.97/x
  3. Step 3: Cross multiply
    158,255.49x = 218,392.92 × 86,639.97
  4. Step 4: Simplify right side
    158,255.49x = 18,921,556,037.01
  5. Step 5: Solve for x
    x = 18,921,556,037.01/158,255.49
  6. Step 6: Final answer
    x = 119,563.35

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