Finding the Fourth Proportional to 78,715.83, 108,566.40 and 50,424.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,715.83 : 108,566.40 = 50,424.15 : x
2. Step 2: Convert to fraction form
   78,715.83/108,566.40 = 50,424.15/x
3. Step 3: Cross multiply
   78,715.83x = 108,566.40 × 50,424.15
4. Step 4: Simplify right side
   78,715.83x = 5,474,368,438.56
5. Step 5: Solve for x
   x = 5,474,368,438.56/78,715.83
6. Step 6: Final answer
   x = 69,545.97