Finding the Fourth Proportional to 111.82, 168.04 and 97.71

Step by Step Solution

1. Step 1: Write the proportion equation
   111.82 : 168.04 = 97.71 : x
2. Step 2: Convert to fraction form
   111.82/168.04 = 97.71/x
3. Step 3: Cross multiply
   111.82x = 168.04 × 97.71
4. Step 4: Simplify right side
   111.82x = 16,419.57
5. Step 5: Solve for x
   x = 16,419.57/111.82
6. Step 6: Final answer
   x = 146.84