Finding the Fourth Proportional to 82,520.81, 113,880.53 and 50,256.95

Step by Step Solution

1. Step 1: Write the proportion equation
   82,520.81 : 113,880.53 = 50,256.95 : x
2. Step 2: Convert to fraction form
   82,520.81/113,880.53 = 50,256.95/x
3. Step 3: Cross multiply
   82,520.81x = 113,880.53 × 50,256.95
4. Step 4: Simplify right side
   82,520.81x = 5,723,287,281.50
5. Step 5: Solve for x
   x = 5,723,287,281.50/82,520.81
6. Step 6: Final answer
   x = 69,355.69