Finding the Fourth Proportional to 78,797.63, 108,740.72 and 50,503.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,797.63 : 108,740.72 = 50,503.31 : x
2. Step 2: Convert to fraction form
   78,797.63/108,740.72 = 50,503.31/x
3. Step 3: Cross multiply
   78,797.63x = 108,740.72 × 50,503.31
4. Step 4: Simplify right side
   78,797.63x = 5,491,766,689.89
5. Step 5: Solve for x
   x = 5,491,766,689.89/78,797.63
6. Step 6: Final answer
   x = 69,694.57