Finding the Fourth Proportional to 196.80, 294.72 and 111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   196.80 : 294.72 = 111.12 : x
2. Step 2: Convert to fraction form
   196.80/294.72 = 111.12/x
3. Step 3: Cross multiply
   196.80x = 294.72 × 111.12
4. Step 4: Simplify right side
   196.80x = 32,749.29
5. Step 5: Solve for x
   x = 32,749.29/196.80
6. Step 6: Final answer
   x = 166.41