Finding the Fourth Proportional to 97.96, 146.56 and 82.72

Step by Step Solution

1. Step 1: Write the proportion equation
   97.96 : 146.56 = 82.72 : x
2. Step 2: Convert to fraction form
   97.96/146.56 = 82.72/x
3. Step 3: Cross multiply
   97.96x = 146.56 × 82.72
4. Step 4: Simplify right side
   97.96x = 12,123.44
5. Step 5: Solve for x
   x = 12,123.44/97.96
6. Step 6: Final answer
   x = 123.76