Finding the Fourth Proportional to 80,719.30, 121,050.15 and 30,786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   80,719.30 : 121,050.15 = 30,786.34 : x
2. Step 2: Convert to fraction form
   80,719.30/121,050.15 = 30,786.34/x
3. Step 3: Cross multiply
   80,719.30x = 121,050.15 × 30,786.34
4. Step 4: Simplify right side
   80,719.30x = 3,726,691,074.95
5. Step 5: Solve for x
   x = 3,726,691,074.95/80,719.30
6. Step 6: Final answer
   x = 46,168.53