Finding the Fourth Proportional to 196.89, 271.71 and 118.22

Step by Step Solution

1. Step 1: Write the proportion equation
   196.89 : 271.71 = 118.22 : x
2. Step 2: Convert to fraction form
   196.89/271.71 = 118.22/x
3. Step 3: Cross multiply
   196.89x = 271.71 × 118.22
4. Step 4: Simplify right side
   196.89x = 32,120.20
5. Step 5: Solve for x
   x = 32,120.20/196.89
6. Step 6: Final answer
   x = 163.14