Finding the Fourth Proportional to 72,552.43, 108,870.68 and 30,428.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,552.43 : 108,870.68 = 30,428.76 : x
2. Step 2: Convert to fraction form
   72,552.43/108,870.68 = 30,428.76/x
3. Step 3: Cross multiply
   72,552.43x = 108,870.68 × 30,428.76
4. Step 4: Simplify right side
   72,552.43x = 3,312,800,277.09
5. Step 5: Solve for x
   x = 3,312,800,277.09/72,552.43
6. Step 6: Final answer
   x = 45,660.77