Finding the Fourth Proportional to 196.12, 270.71 and 113.27

Step by Step Solution

1. Step 1: Write the proportion equation
   196.12 : 270.71 = 113.27 : x
2. Step 2: Convert to fraction form
   196.12/270.71 = 113.27/x
3. Step 3: Cross multiply
   196.12x = 270.71 × 113.27
4. Step 4: Simplify right side
   196.12x = 30,661.83
5. Step 5: Solve for x
   x = 30,661.83/196.12
6. Step 6: Final answer
   x = 156.34