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Finding the Fourth Proportional to 57,188.44, 78,918.14 and 31,693.72

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Solution

The fourth proportional to 57,188.44, 78,918.14 and 31,693.72 is: 43,736.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,188.44 : 78,918.14 = 31,693.72 : x
  2. Step 2: Convert to fraction form
    57,188.44/78,918.14 = 31,693.72/x
  3. Step 3: Cross multiply
    57,188.44x = 78,918.14 × 31,693.72
  4. Step 4: Simplify right side
    57,188.44x = 2,501,209,432.08
  5. Step 5: Solve for x
    x = 2,501,209,432.08/57,188.44
  6. Step 6: Final answer
    x = 43,736.28

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