Finding the Fourth Proportional to 72.92, 108.94 and 64.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72.92 : 108.94 = 64.82 : x
2. Step 2: Convert to fraction form
   72.92/108.94 = 64.82/x
3. Step 3: Cross multiply
   72.92x = 108.94 × 64.82
4. Step 4: Simplify right side
   72.92x = 7,061.49
5. Step 5: Solve for x
   x = 7,061.49/72.92
6. Step 6: Final answer
   x = 96.84