Finding the Fourth Proportional to 72,581.28, 100,162.56 and 40,750.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,581.28 : 100,162.56 = 40,750.56 : x
2. Step 2: Convert to fraction form
   72,581.28/100,162.56 = 40,750.56/x
3. Step 3: Cross multiply
   72,581.28x = 100,162.56 × 40,750.56
4. Step 4: Simplify right side
   72,581.28x = 4,081,680,411.03
5. Step 5: Solve for x
   x = 4,081,680,411.03/72,581.28
6. Step 6: Final answer
   x = 56,235.99