Finding the Fourth Proportional to 72,819.60, 109,271.85 and 30,697.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,819.60 : 109,271.85 = 30,697.10 : x
2. Step 2: Convert to fraction form
   72,819.60/109,271.85 = 30,697.10/x
3. Step 3: Cross multiply
   72,819.60x = 109,271.85 × 30,697.10
4. Step 4: Simplify right side
   72,819.60x = 3,354,328,906.64
5. Step 5: Solve for x
   x = 3,354,328,906.64/72,819.60
6. Step 6: Final answer
   x = 46,063.54