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Finding the Fourth Proportional to 57,786.30, 86,679.45 and 49,059.90

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Solution

The fourth proportional to 57,786.30, 86,679.45 and 49,059.90 is: 73,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.30 : 86,679.45 = 49,059.90 : x
  2. Step 2: Convert to fraction form
    57,786.30/86,679.45 = 49,059.90/x
  3. Step 3: Cross multiply
    57,786.30x = 86,679.45 × 49,059.90
  4. Step 4: Simplify right side
    57,786.30x = 4,252,485,149.06
  5. Step 5: Solve for x
    x = 4,252,485,149.06/57,786.30
  6. Step 6: Final answer
    x = 73,589.85

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