Finding the Fourth Proportional to 196.76, 271.51 and 131.15

Step by Step Solution

1. Step 1: Write the proportion equation
   196.76 : 271.51 = 131.15 : x
2. Step 2: Convert to fraction form
   196.76/271.51 = 131.15/x
3. Step 3: Cross multiply
   196.76x = 271.51 × 131.15
4. Step 4: Simplify right side
   196.76x = 35,608.89
5. Step 5: Solve for x
   x = 35,608.89/196.76
6. Step 6: Final answer
   x = 180.97