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Finding the Fourth Proportional to 85,475.52, 128,239.20 and 60,563.84

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Solution

The fourth proportional to 85,475.52, 128,239.20 and 60,563.84 is: 90,864.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,475.52 : 128,239.20 = 60,563.84 : x
  2. Step 2: Convert to fraction form
    85,475.52/128,239.20 = 60,563.84/x
  3. Step 3: Cross multiply
    85,475.52x = 128,239.20 × 60,563.84
  4. Step 4: Simplify right side
    85,475.52x = 7,766,657,749.33
  5. Step 5: Solve for x
    x = 7,766,657,749.33/85,475.52
  6. Step 6: Final answer
    x = 90,864.12

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