Finding the Fourth Proportional to 196.83, 271.63 and 118.15

Step by Step Solution

1. Step 1: Write the proportion equation
   196.83 : 271.63 = 118.15 : x
2. Step 2: Convert to fraction form
   196.83/271.63 = 118.15/x
3. Step 3: Cross multiply
   196.83x = 271.63 × 118.15
4. Step 4: Simplify right side
   196.83x = 32,093.08
5. Step 5: Solve for x
   x = 32,093.08/196.83
6. Step 6: Final answer
   x = 163.05