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Finding the Fourth Proportional to 113,640.37, 170,423.65 and 53,659.56

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Solution

The fourth proportional to 113,640.37, 170,423.65 and 53,659.56 is: 80,471.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,640.37 : 170,423.65 = 53,659.56 : x
  2. Step 2: Convert to fraction form
    113,640.37/170,423.65 = 53,659.56/x
  3. Step 3: Cross multiply
    113,640.37x = 170,423.65 × 53,659.56
  4. Step 4: Simplify right side
    113,640.37x = 9,144,858,476.92
  5. Step 5: Solve for x
    x = 9,144,858,476.92/113,640.37
  6. Step 6: Final answer
    x = 80,471.92

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