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Finding the Fourth Proportional to 79,805.38, 119,725.38 and 39,845.86

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Solution

The fourth proportional to 79,805.38, 119,725.38 and 39,845.86 is: 59,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,805.38 : 119,725.38 = 39,845.86 : x
  2. Step 2: Convert to fraction form
    79,805.38/119,725.38 = 39,845.86/x
  3. Step 3: Cross multiply
    79,805.38x = 119,725.38 × 39,845.86
  4. Step 4: Simplify right side
    79,805.38x = 4,770,560,729.93
  5. Step 5: Solve for x
    x = 4,770,560,729.93/79,805.38
  6. Step 6: Final answer
    x = 59,777.43

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