Finding the Fourth Proportional to 131.88, 196.83 and 113.58

Step by Step Solution

1. Step 1: Write the proportion equation
   131.88 : 196.83 = 113.58 : x
2. Step 2: Convert to fraction form
   131.88/196.83 = 113.58/x
3. Step 3: Cross multiply
   131.88x = 196.83 × 113.58
4. Step 4: Simplify right side
   131.88x = 22,355.95
5. Step 5: Solve for x
   x = 22,355.95/131.88
6. Step 6: Final answer
   x = 169.52