Finding the Fourth Proportional to 196.56, 294.72 and 68.28

Step by Step Solution

1. Step 1: Write the proportion equation
   196.56 : 294.72 = 68.28 : x
2. Step 2: Convert to fraction form
   196.56/294.72 = 68.28/x
3. Step 3: Cross multiply
   196.56x = 294.72 × 68.28
4. Step 4: Simplify right side
   196.56x = 20,123.48
5. Step 5: Solve for x
   x = 20,123.48/196.56
6. Step 6: Final answer
   x = 102.38