Finding the Fourth Proportional to 139,575.99, 209,237.29 and 50,766.71

Step by Step Solution

1. Step 1: Write the proportion equation
   139,575.99 : 209,237.29 = 50,766.71 : x
2. Step 2: Convert to fraction form
   139,575.99/209,237.29 = 50,766.71/x
3. Step 3: Cross multiply
   139,575.99x = 209,237.29 × 50,766.71
4. Step 4: Simplify right side
   139,575.99x = 10,622,288,568.78
5. Step 5: Solve for x
   x = 10,622,288,568.78/139,575.99
6. Step 6: Final answer
   x = 76,103.98