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Finding the Fourth Proportional to 158,470.76, 218,694.72 and 86,855.18

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Solution

The fourth proportional to 158,470.76, 218,694.72 and 86,855.18 is: 119,862.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,470.76 : 218,694.72 = 86,855.18 : x
  2. Step 2: Convert to fraction form
    158,470.76/218,694.72 = 86,855.18/x
  3. Step 3: Cross multiply
    158,470.76x = 218,694.72 × 86,855.18
  4. Step 4: Simplify right side
    158,470.76x = 18,994,769,270.65
  5. Step 5: Solve for x
    x = 18,994,769,270.65/158,470.76
  6. Step 6: Final answer
    x = 119,862.93

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