Finding the Fourth Proportional to 72,819.28, 109,271.38 and 30,696.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,819.28 : 109,271.38 = 30,696.79 : x
2. Step 2: Convert to fraction form
   72,819.28/109,271.38 = 30,696.79/x
3. Step 3: Cross multiply
   72,819.28x = 109,271.38 × 30,696.79
4. Step 4: Simplify right side
   72,819.28x = 3,354,280,604.87
5. Step 5: Solve for x
   x = 3,354,280,604.87/72,819.28
6. Step 6: Final answer
   x = 46,063.08