Finding the Fourth Proportional to 404,796.86, 558,385.48 and 261,556.91

Step by Step Solution

1. Step 1: Write the proportion equation
   404,796.86 : 558,385.48 = 261,556.91 : x
2. Step 2: Convert to fraction form
   404,796.86/558,385.48 = 261,556.91/x
3. Step 3: Cross multiply
   404,796.86x = 558,385.48 × 261,556.91
4. Step 4: Simplify right side
   404,796.86x = 146,049,580,737.67
5. Step 5: Solve for x
   x = 146,049,580,737.67/404,796.86
6. Step 6: Final answer
   x = 360,797.22