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Finding the Fourth Proportional to 85,218.82, 127,763.43 and 45,742.66

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Solution

The fourth proportional to 85,218.82, 127,763.43 and 45,742.66 is: 68,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,218.82 : 127,763.43 = 45,742.66 : x
  2. Step 2: Convert to fraction form
    85,218.82/127,763.43 = 45,742.66/x
  3. Step 3: Cross multiply
    85,218.82x = 127,763.43 × 45,742.66
  4. Step 4: Simplify right side
    85,218.82x = 5,844,239,138.92
  5. Step 5: Solve for x
    x = 5,844,239,138.92/85,218.82
  6. Step 6: Final answer
    x = 68,579.21

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