Finding the Fourth Proportional to 131.43, 196.17 and 116.05

Step by Step Solution

1. Step 1: Write the proportion equation
   131.43 : 196.17 = 116.05 : x
2. Step 2: Convert to fraction form
   131.43/196.17 = 116.05/x
3. Step 3: Cross multiply
   131.43x = 196.17 × 116.05
4. Step 4: Simplify right side
   131.43x = 22,765.53
5. Step 5: Solve for x
   x = 22,765.53/131.43
6. Step 6: Final answer
   x = 173.21