Finding the Fourth Proportional to 83.04, 124.86 and 82.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83.04 : 124.86 = 82.50 : x
2. Step 2: Convert to fraction form
   83.04/124.86 = 82.50/x
3. Step 3: Cross multiply
   83.04x = 124.86 × 82.50
4. Step 4: Simplify right side
   83.04x = 10,300.95
5. Step 5: Solve for x
   x = 10,300.95/83.04
6. Step 6: Final answer
   x = 124.05