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Finding the Fourth Proportional to 85,609.54, 118,254.04 and 65,712.29

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Solution

The fourth proportional to 85,609.54, 118,254.04 and 65,712.29 is: 90,769.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,609.54 : 118,254.04 = 65,712.29 : x
  2. Step 2: Convert to fraction form
    85,609.54/118,254.04 = 65,712.29/x
  3. Step 3: Cross multiply
    85,609.54x = 118,254.04 × 65,712.29
  4. Step 4: Simplify right side
    85,609.54x = 7,770,743,770.15
  5. Step 5: Solve for x
    x = 7,770,743,770.15/85,609.54
  6. Step 6: Final answer
    x = 90,769.61

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