Finding the Fourth Proportional to 196.74, 271.52 and 113.86

Step by Step Solution

1. Step 1: Write the proportion equation
   196.74 : 271.52 = 113.86 : x
2. Step 2: Convert to fraction form
   196.74/271.52 = 113.86/x
3. Step 3: Cross multiply
   196.74x = 271.52 × 113.86
4. Step 4: Simplify right side
   196.74x = 30,915.27
5. Step 5: Solve for x
   x = 30,915.27/196.74
6. Step 6: Final answer
   x = 157.14