Finding the Fourth Proportional to 298,940.59, 412,304.73 and 191,520.61

Step by Step Solution

1. Step 1: Write the proportion equation
   298,940.59 : 412,304.73 = 191,520.61 : x
2. Step 2: Convert to fraction form
   298,940.59/412,304.73 = 191,520.61/x
3. Step 3: Cross multiply
   298,940.59x = 412,304.73 × 191,520.61
4. Step 4: Simplify right side
   298,940.59x = 78,964,854,426.25
5. Step 5: Solve for x
   x = 78,964,854,426.25/298,940.59
6. Step 6: Final answer
   x = 264,148.99