Finding the Fourth Proportional to 196.16, 294.16 and 72.72

Step by Step Solution

1. Step 1: Write the proportion equation
   196.16 : 294.16 = 72.72 : x
2. Step 2: Convert to fraction form
   196.16/294.16 = 72.72/x
3. Step 3: Cross multiply
   196.16x = 294.16 × 72.72
4. Step 4: Simplify right side
   196.16x = 21,391.32
5. Step 5: Solve for x
   x = 21,391.32/196.16
6. Step 6: Final answer
   x = 109.05