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Finding the Fourth Proportional to 157,389.23, 217,190.80 and 85,767.71

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Solution

The fourth proportional to 157,389.23, 217,190.80 and 85,767.71 is: 118,355.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,389.23 : 217,190.80 = 85,767.71 : x
  2. Step 2: Convert to fraction form
    157,389.23/217,190.80 = 85,767.71/x
  3. Step 3: Cross multiply
    157,389.23x = 217,190.80 × 85,767.71
  4. Step 4: Simplify right side
    157,389.23x = 18,627,957,549.07
  5. Step 5: Solve for x
    x = 18,627,957,549.07/157,389.23
  6. Step 6: Final answer
    x = 118,355.99

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