Finding the Fourth Proportional to 276,208.72, 412,018.01 and 271,641.52

Step by Step Solution

1. Step 1: Write the proportion equation
   276,208.72 : 412,018.01 = 271,641.52 : x
2. Step 2: Convert to fraction form
   276,208.72/412,018.01 = 271,641.52/x
3. Step 3: Cross multiply
   276,208.72x = 412,018.01 × 271,641.52
4. Step 4: Simplify right side
   276,208.72x = 111,921,198,503.78
5. Step 5: Solve for x
   x = 111,921,198,503.78/276,208.72
6. Step 6: Final answer
   x = 405,205.16