Finding the Fourth Proportional to 82.75, 123.94 and 64.34

Step by Step Solution

1. Step 1: Write the proportion equation
   82.75 : 123.94 = 64.34 : x
2. Step 2: Convert to fraction form
   82.75/123.94 = 64.34/x
3. Step 3: Cross multiply
   82.75x = 123.94 × 64.34
4. Step 4: Simplify right side
   82.75x = 7,974.30
5. Step 5: Solve for x
   x = 7,974.30/82.75
6. Step 6: Final answer
   x = 96.37