Finding the Fourth Proportional to 388,294.56, 536,011.82 and 261,043.96

Step by Step Solution

1. Step 1: Write the proportion equation
   388,294.56 : 536,011.82 = 261,043.96 : x
2. Step 2: Convert to fraction form
   388,294.56/536,011.82 = 261,043.96/x
3. Step 3: Cross multiply
   388,294.56x = 536,011.82 × 261,043.96
4. Step 4: Simplify right side
   388,294.56x = 139,922,648,099.61
5. Step 5: Solve for x
   x = 139,922,648,099.61/388,294.56
6. Step 6: Final answer
   x = 360,351.81