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Finding the Fourth Proportional to 157,640.26, 217,542.76 and 86,020.06

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Solution

The fourth proportional to 157,640.26, 217,542.76 and 86,020.06 is: 118,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,640.26 : 217,542.76 = 86,020.06 : x
  2. Step 2: Convert to fraction form
    157,640.26/217,542.76 = 86,020.06/x
  3. Step 3: Cross multiply
    157,640.26x = 217,542.76 × 86,020.06
  4. Step 4: Simplify right side
    157,640.26x = 18,713,041,267.77
  5. Step 5: Solve for x
    x = 18,713,041,267.77/157,640.26
  6. Step 6: Final answer
    x = 118,707.25

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