Finding the Fourth Proportional to 72,561.15, 108,861.44 and 30,419.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,561.15 : 108,861.44 = 30,419.10 : x
2. Step 2: Convert to fraction form
   72,561.15/108,861.44 = 30,419.10/x
3. Step 3: Cross multiply
   72,561.15x = 108,861.44 × 30,419.10
4. Step 4: Simplify right side
   72,561.15x = 3,311,466,877.41
5. Step 5: Solve for x
   x = 3,311,466,877.41/72,561.15
6. Step 6: Final answer
   x = 45,636.91