Finding the Fourth Proportional to 139,329.79, 208,994.15 and 50,582.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,329.79 : 208,994.15 = 50,582.95 : x
2. Step 2: Convert to fraction form
   139,329.79/208,994.15 = 50,582.95/x
3. Step 3: Cross multiply
   139,329.79x = 208,994.15 × 50,582.95
4. Step 4: Simplify right side
   139,329.79x = 10,571,540,386.83
5. Step 5: Solve for x
   x = 10,571,540,386.83/139,329.79
6. Step 6: Final answer
   x = 75,874.23