Finding the Fourth Proportional to 139,292.50, 209,021.78 and 50,552.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,292.50 : 209,021.78 = 50,552.94 : x
2. Step 2: Convert to fraction form
   139,292.50/209,021.78 = 50,552.94/x
3. Step 3: Cross multiply
   139,292.50x = 209,021.78 × 50,552.94
4. Step 4: Simplify right side
   139,292.50x = 10,566,665,503.03
5. Step 5: Solve for x
   x = 10,566,665,503.03/139,292.50
6. Step 6: Final answer
   x = 75,859.54