Finding the Fourth Proportional to 72,450, 108,684.72 and 30,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,450 : 108,684.72 = 30,906.72 : x
2. Step 2: Convert to fraction form
   72,450/108,684.72 = 30,906.72/x
3. Step 3: Cross multiply
   72,450x = 108,684.72 × 30,906.72
4. Step 4: Simplify right side
   72,450x = 3,359,088,209.32
5. Step 5: Solve for x
   x = 3,359,088,209.32/72,450
6. Step 6: Final answer
   x = 46,364.23