Finding the Fourth Proportional to 139,078.08, 208,673.82 and 50,340.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,078.08 : 208,673.82 = 50,340.96 : x
2. Step 2: Convert to fraction form
   139,078.08/208,673.82 = 50,340.96/x
3. Step 3: Cross multiply
   139,078.08x = 208,673.82 × 50,340.96
4. Step 4: Simplify right side
   139,078.08x = 10,504,840,425.67
5. Step 5: Solve for x
   x = 10,504,840,425.67/139,078.08
6. Step 6: Final answer
   x = 75,531.96