Finding the Fourth Proportional to 109,028.56, 163,545.92 and 30,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,028.56 : 163,545.92 = 30,142.78 : x
2. Step 2: Convert to fraction form
   109,028.56/163,545.92 = 30,142.78/x
3. Step 3: Cross multiply
   109,028.56x = 163,545.92 × 30,142.78
4. Step 4: Simplify right side
   109,028.56x = 4,929,728,686.46
5. Step 5: Solve for x
   x = 4,929,728,686.46/109,028.56
6. Step 6: Final answer
   x = 45,215.02