Finding the Fourth Proportional to 80,781.06, 111,480.44 and 50,556.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,781.06 : 111,480.44 = 50,556.72 : x
2. Step 2: Convert to fraction form
   80,781.06/111,480.44 = 50,556.72/x
3. Step 3: Cross multiply
   80,781.06x = 111,480.44 × 50,556.72
4. Step 4: Simplify right side
   80,781.06x = 5,636,085,390.56
5. Step 5: Solve for x
   x = 5,636,085,390.56/80,781.06
6. Step 6: Final answer
   x = 69,769.89