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Finding the Fourth Proportional to 57,865.92, 86,628 and 43,139.52

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Solution

The fourth proportional to 57,865.92, 86,628 and 43,139.52 is: 64,581.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,865.92 : 86,628 = 43,139.52 : x
  2. Step 2: Convert to fraction form
    57,865.92/86,628 = 43,139.52/x
  3. Step 3: Cross multiply
    57,865.92x = 86,628 × 43,139.52
  4. Step 4: Simplify right side
    57,865.92x = 3,737,090,338.56
  5. Step 5: Solve for x
    x = 3,737,090,338.56/57,865.92
  6. Step 6: Final answer
    x = 64,581.89

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