Finding the Fourth Proportional to 116.82, 161.17 and 67.71

Step by Step Solution

1. Step 1: Write the proportion equation
   116.82 : 161.17 = 67.71 : x
2. Step 2: Convert to fraction form
   116.82/161.17 = 67.71/x
3. Step 3: Cross multiply
   116.82x = 161.17 × 67.71
4. Step 4: Simplify right side
   116.82x = 10,913.64
5. Step 5: Solve for x
   x = 10,913.64/116.82
6. Step 6: Final answer
   x = 93.42