Finding the Fourth Proportional to 50,161.05, 69,221.69 and 28,939.86

Step by Step Solution

1. Step 1: Write the proportion equation
   50,161.05 : 69,221.69 = 28,939.86 : x
2. Step 2: Convert to fraction form
   50,161.05/69,221.69 = 28,939.86/x
3. Step 3: Cross multiply
   50,161.05x = 69,221.69 × 28,939.86
4. Step 4: Simplify right side
   50,161.05x = 2,003,265,872.86
5. Step 5: Solve for x
   x = 2,003,265,872.86/50,161.05
6. Step 6: Final answer
   x = 39,936.68