Finding the Fourth Proportional to 78,766.80, 108,708.72 and 50,089.26

Step by Step Solution

1. Step 1: Write the proportion equation
   78,766.80 : 108,708.72 = 50,089.26 : x
2. Step 2: Convert to fraction form
   78,766.80/108,708.72 = 50,089.26/x
3. Step 3: Cross multiply
   78,766.80x = 108,708.72 × 50,089.26
4. Step 4: Simplify right side
   78,766.80x = 5,445,139,340.35
5. Step 5: Solve for x
   x = 5,445,139,340.35/78,766.80
6. Step 6: Final answer
   x = 69,129.88