Finding the Fourth Proportional to 276,443.91, 381,511.89 and 155,596.77

Step by Step Solution

1. Step 1: Write the proportion equation
   276,443.91 : 381,511.89 = 155,596.77 : x
2. Step 2: Convert to fraction form
   276,443.91/381,511.89 = 155,596.77/x
3. Step 3: Cross multiply
   276,443.91x = 381,511.89 × 155,596.77
4. Step 4: Simplify right side
   276,443.91x = 59,362,017,800.60
5. Step 5: Solve for x
   x = 59,362,017,800.60/276,443.91
6. Step 6: Final answer
   x = 214,734.40