Finding the Fourth Proportional to 196.16, 270.72 and 113.27

Step by Step Solution

1. Step 1: Write the proportion equation
   196.16 : 270.72 = 113.27 : x
2. Step 2: Convert to fraction form
   196.16/270.72 = 113.27/x
3. Step 3: Cross multiply
   196.16x = 270.72 × 113.27
4. Step 4: Simplify right side
   196.16x = 30,665.13
5. Step 5: Solve for x
   x = 30,665.13/196.16
6. Step 6: Final answer
   x = 156.33