Finding the Fourth Proportional to 274,309.58, 409,641.63 and 271,340.72

Step by Step Solution

1. Step 1: Write the proportion equation
   274,309.58 : 409,641.63 = 271,340.72 : x
2. Step 2: Convert to fraction form
   274,309.58/409,641.63 = 271,340.72/x
3. Step 3: Cross multiply
   274,309.58x = 409,641.63 × 271,340.72
4. Step 4: Simplify right side
   274,309.58x = 111,152,454,826.17
5. Step 5: Solve for x
   x = 111,152,454,826.17/274,309.58
6. Step 6: Final answer
   x = 405,208.07