Finding the Fourth Proportional to 196.56, 271.35 and 131.10

Step by Step Solution

1. Step 1: Write the proportion equation
   196.56 : 271.35 = 131.10 : x
2. Step 2: Convert to fraction form
   196.56/271.35 = 131.10/x
3. Step 3: Cross multiply
   196.56x = 271.35 × 131.10
4. Step 4: Simplify right side
   196.56x = 35,573.99
5. Step 5: Solve for x
   x = 35,573.99/196.56
6. Step 6: Final answer
   x = 180.98