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Finding the Fourth Proportional to 157,764.15, 217,713.66 and 86,143.67

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Solution

The fourth proportional to 157,764.15, 217,713.66 and 86,143.67 is: 118,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,764.15 : 217,713.66 = 86,143.67 : x
  2. Step 2: Convert to fraction form
    157,764.15/217,713.66 = 86,143.67/x
  3. Step 3: Cross multiply
    157,764.15x = 217,713.66 × 86,143.67
  4. Step 4: Simplify right side
    157,764.15x = 18,754,652,808.32
  5. Step 5: Solve for x
    x = 18,754,652,808.32/157,764.15
  6. Step 6: Final answer
    x = 118,877.78

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