Finding the Fourth Proportional to 196.76, 271.58 and 113.92

Step by Step Solution

1. Step 1: Write the proportion equation
   196.76 : 271.58 = 113.92 : x
2. Step 2: Convert to fraction form
   196.76/271.58 = 113.92/x
3. Step 3: Cross multiply
   196.76x = 271.58 × 113.92
4. Step 4: Simplify right side
   196.76x = 30,937.15
5. Step 5: Solve for x
   x = 30,937.15/196.76
6. Step 6: Final answer
   x = 157.23