Finding the Fourth Proportional to 263,778.89, 363,992.69 and 149,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   263,778.89 : 363,992.69 = 149,067.50 : x
2. Step 2: Convert to fraction form
   263,778.89/363,992.69 = 149,067.50/x
3. Step 3: Cross multiply
   263,778.89x = 363,992.69 × 149,067.50
4. Step 4: Simplify right side
   263,778.89x = 54,259,477,751.27
5. Step 5: Solve for x
   x = 54,259,477,751.27/263,778.89
6. Step 6: Final answer
   x = 205,700.61