Finding the Fourth Proportional to 196.79, 271.59 and 113.93

Step by Step Solution

1. Step 1: Write the proportion equation
   196.79 : 271.59 = 113.93 : x
2. Step 2: Convert to fraction form
   196.79/271.59 = 113.93/x
3. Step 3: Cross multiply
   196.79x = 271.59 × 113.93
4. Step 4: Simplify right side
   196.79x = 30,940.32
5. Step 5: Solve for x
   x = 30,940.32/196.79
6. Step 6: Final answer
   x = 157.23