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Finding the Fourth Proportional to 263,403.96, 395,065.84 and 85,910.72

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Solution

The fourth proportional to 263,403.96, 395,065.84 and 85,910.72 is: 128,853.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,403.96 : 395,065.84 = 85,910.72 : x
  2. Step 2: Convert to fraction form
    263,403.96/395,065.84 = 85,910.72/x
  3. Step 3: Cross multiply
    263,403.96x = 395,065.84 × 85,910.72
  4. Step 4: Simplify right side
    263,403.96x = 33,940,390,761.80
  5. Step 5: Solve for x
    x = 33,940,390,761.80/263,403.96
  6. Step 6: Final answer
    x = 128,853.00

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