Finding the Fourth Proportional to 80,651.36, 120,978.16 and 30,734.17

Step by Step Solution

1. Step 1: Write the proportion equation
   80,651.36 : 120,978.16 = 30,734.17 : x
2. Step 2: Convert to fraction form
   80,651.36/120,978.16 = 30,734.17/x
3. Step 3: Cross multiply
   80,651.36x = 120,978.16 × 30,734.17
4. Step 4: Simplify right side
   80,651.36x = 3,718,162,956.45
5. Step 5: Solve for x
   x = 3,718,162,956.45/80,651.36
6. Step 6: Final answer
   x = 46,101.68