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Finding the Fourth Proportional to 57,856.91, 86,801.76 and 18,417.11

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Solution

The fourth proportional to 57,856.91, 86,801.76 and 18,417.11 is: 27,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,856.91 : 86,801.76 = 18,417.11 : x
  2. Step 2: Convert to fraction form
    57,856.91/86,801.76 = 18,417.11/x
  3. Step 3: Cross multiply
    57,856.91x = 86,801.76 × 18,417.11
  4. Step 4: Simplify right side
    57,856.91x = 1,598,637,128.10
  5. Step 5: Solve for x
    x = 1,598,637,128.10/57,856.91
  6. Step 6: Final answer
    x = 27,630.88

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