Finding the Fourth Proportional to 196.63, 271.35 and 113.76

Step by Step Solution

1. Step 1: Write the proportion equation
   196.63 : 271.35 = 113.76 : x
2. Step 2: Convert to fraction form
   196.63/271.35 = 113.76/x
3. Step 3: Cross multiply
   196.63x = 271.35 × 113.76
4. Step 4: Simplify right side
   196.63x = 30,868.78
5. Step 5: Solve for x
   x = 30,868.78/196.63
6. Step 6: Final answer
   x = 156.99