Finding the Fourth Proportional to 80,680.74, 121,018.32 and 30,759

Step by Step Solution

1. Step 1: Write the proportion equation
   80,680.74 : 121,018.32 = 30,759 : x
2. Step 2: Convert to fraction form
   80,680.74/121,018.32 = 30,759/x
3. Step 3: Cross multiply
   80,680.74x = 121,018.32 × 30,759
4. Step 4: Simplify right side
   80,680.74x = 3,722,402,504.88
5. Step 5: Solve for x
   x = 3,722,402,504.88/80,680.74
6. Step 6: Final answer
   x = 46,137.44