Finding the Fourth Proportional to 72,425.43, 108,624.78 and 30,294.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,425.43 : 108,624.78 = 30,294.09 : x
2. Step 2: Convert to fraction form
   72,425.43/108,624.78 = 30,294.09/x
3. Step 3: Cross multiply
   72,425.43x = 108,624.78 × 30,294.09
4. Step 4: Simplify right side
   72,425.43x = 3,290,688,861.55
5. Step 5: Solve for x
   x = 3,290,688,861.55/72,425.43
6. Step 6: Final answer
   x = 45,435.54