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Finding the Fourth Proportional to 78,918.72, 108,903.87 and 43,102.14

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Solution

The fourth proportional to 78,918.72, 108,903.87 and 43,102.14 is: 59,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.72 : 108,903.87 = 43,102.14 : x
  2. Step 2: Convert to fraction form
    78,918.72/108,903.87 = 43,102.14/x
  3. Step 3: Cross multiply
    78,918.72x = 108,903.87 × 43,102.14
  4. Step 4: Simplify right side
    78,918.72x = 4,693,989,851.28
  5. Step 5: Solve for x
    x = 4,693,989,851.28/78,918.72
  6. Step 6: Final answer
    x = 59,478.79

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