Finding the Fourth Proportional to 82.34, 123.35 and 65.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82.34 : 123.35 = 65.15 : x
2. Step 2: Convert to fraction form
   82.34/123.35 = 65.15/x
3. Step 3: Cross multiply
   82.34x = 123.35 × 65.15
4. Step 4: Simplify right side
   82.34x = 8,035.31
5. Step 5: Solve for x
   x = 8,035.31/82.34
6. Step 6: Final answer
   x = 97.59