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Finding the Fourth Proportional to 85,245.80, 127,905.56 and 45,756.78

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Solution

The fourth proportional to 85,245.80, 127,905.56 and 45,756.78 is: 68,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,245.80 : 127,905.56 = 45,756.78 : x
  2. Step 2: Convert to fraction form
    85,245.80/127,905.56 = 45,756.78/x
  3. Step 3: Cross multiply
    85,245.80x = 127,905.56 × 45,756.78
  4. Step 4: Simplify right side
    85,245.80x = 5,852,546,340.91
  5. Step 5: Solve for x
    x = 5,852,546,340.91/85,245.80
  6. Step 6: Final answer
    x = 68,654.96

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