Finding the Fourth Proportional to 82.49, 113.83 and 51.39

Step by Step Solution

1. Step 1: Write the proportion equation
   82.49 : 113.83 = 51.39 : x
2. Step 2: Convert to fraction form
   82.49/113.83 = 51.39/x
3. Step 3: Cross multiply
   82.49x = 113.83 × 51.39
4. Step 4: Simplify right side
   82.49x = 5,849.60
5. Step 5: Solve for x
   x = 5,849.60/82.49
6. Step 6: Final answer
   x = 70.92