Finding the Fourth Proportional to 82.96, 114.42 and 70.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82.96 : 114.42 = 70.72 : x
2. Step 2: Convert to fraction form
   82.96/114.42 = 70.72/x
3. Step 3: Cross multiply
   82.96x = 114.42 × 70.72
4. Step 4: Simplify right side
   82.96x = 8,091.78
5. Step 5: Solve for x
   x = 8,091.78/82.96
6. Step 6: Final answer
   x = 97.54