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Finding the Fourth Proportional to 158,406.63, 218,601.14 and 86,789.36

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Solution

The fourth proportional to 158,406.63, 218,601.14 and 86,789.36 is: 119,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,406.63 : 218,601.14 = 86,789.36 : x
  2. Step 2: Convert to fraction form
    158,406.63/218,601.14 = 86,789.36/x
  3. Step 3: Cross multiply
    158,406.63x = 218,601.14 × 86,789.36
  4. Step 4: Simplify right side
    158,406.63x = 18,972,253,035.87
  5. Step 5: Solve for x
    x = 18,972,253,035.87/158,406.63
  6. Step 6: Final answer
    x = 119,769.31

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