Finding the Fourth Proportional to 78,803.12, 108,821.94 and 50,557.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,803.12 : 108,821.94 = 50,557.88 : x
2. Step 2: Convert to fraction form
   78,803.12/108,821.94 = 50,557.88/x
3. Step 3: Cross multiply
   78,803.12x = 108,821.94 × 50,557.88
4. Step 4: Simplify right side
   78,803.12x = 5,501,806,583.89
5. Step 5: Solve for x
   x = 5,501,806,583.89/78,803.12
6. Step 6: Final answer
   x = 69,817.12