Finding the Fourth Proportional to 82.41, 123.78 and 60.84

Step by Step Solution

1. Step 1: Write the proportion equation
   82.41 : 123.78 = 60.84 : x
2. Step 2: Convert to fraction form
   82.41/123.78 = 60.84/x
3. Step 3: Cross multiply
   82.41x = 123.78 × 60.84
4. Step 4: Simplify right side
   82.41x = 7,530.78
5. Step 5: Solve for x
   x = 7,530.78/82.41
6. Step 6: Final answer
   x = 91.38