Finding the Fourth Proportional to 131.29, 196.61 and 111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   131.29 : 196.61 = 111.92 : x
2. Step 2: Convert to fraction form
   131.29/196.61 = 111.92/x
3. Step 3: Cross multiply
   131.29x = 196.61 × 111.92
4. Step 4: Simplify right side
   131.29x = 22,003.61
5. Step 5: Solve for x
   x = 22,003.61/131.29
6. Step 6: Final answer
   x = 167.60