Finding the Fourth Proportional to 80,730.18, 111,377.57 and 50,504.03

Step by Step Solution

1. Step 1: Write the proportion equation
   80,730.18 : 111,377.57 = 50,504.03 : x
2. Step 2: Convert to fraction form
   80,730.18/111,377.57 = 50,504.03/x
3. Step 3: Cross multiply
   80,730.18x = 111,377.57 × 50,504.03
4. Step 4: Simplify right side
   80,730.18x = 5,625,015,327.20
5. Step 5: Solve for x
   x = 5,625,015,327.20/80,730.18
6. Step 6: Final answer
   x = 69,676.73