Finding the Fourth Proportional to 131.18, 196.52 and 82.98

Step by Step Solution

1. Step 1: Write the proportion equation
   131.18 : 196.52 = 82.98 : x
2. Step 2: Convert to fraction form
   131.18/196.52 = 82.98/x
3. Step 3: Cross multiply
   131.18x = 196.52 × 82.98
4. Step 4: Simplify right side
   131.18x = 16,306.81
5. Step 5: Solve for x
   x = 16,306.81/131.18
6. Step 6: Final answer
   x = 124.31