Finding the Fourth Proportional to 78,821.78, 108,758.12 and 50,152.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,821.78 : 108,758.12 = 50,152.82 : x
2. Step 2: Convert to fraction form
   78,821.78/108,758.12 = 50,152.82/x
3. Step 3: Cross multiply
   78,821.78x = 108,758.12 × 50,152.82
4. Step 4: Simplify right side
   78,821.78x = 5,454,526,415.90
5. Step 5: Solve for x
   x = 5,454,526,415.90/78,821.78
6. Step 6: Final answer
   x = 69,200.75