Finding the Fourth Proportional to 79,381.98, 109,555.83 and 50,728.05

Step by Step Solution

1. Step 1: Write the proportion equation
   79,381.98 : 109,555.83 = 50,728.05 : x
2. Step 2: Convert to fraction form
   79,381.98/109,555.83 = 50,728.05/x
3. Step 3: Cross multiply
   79,381.98x = 109,555.83 × 50,728.05
4. Step 4: Simplify right side
   79,381.98x = 5,557,553,622.03
5. Step 5: Solve for x
   x = 5,557,553,622.03/79,381.98
6. Step 6: Final answer
   x = 70,010.27