Finding the Fourth Proportional to 74,443.10, 111,491.85 and 72,715.10

Step by Step Solution

1. Step 1: Write the proportion equation
   74,443.10 : 111,491.85 = 72,715.10 : x
2. Step 2: Convert to fraction form
   74,443.10/111,491.85 = 72,715.10/x
3. Step 3: Cross multiply
   74,443.10x = 111,491.85 × 72,715.10
4. Step 4: Simplify right side
   74,443.10x = 8,107,141,021.94
5. Step 5: Solve for x
   x = 8,107,141,021.94/74,443.10
6. Step 6: Final answer
   x = 108,903.86