Finding the Fourth Proportional to 321,577.15, 443,754.43 and 178,323.79

Step by Step Solution

1. Step 1: Write the proportion equation
   321,577.15 : 443,754.43 = 178,323.79 : x
2. Step 2: Convert to fraction form
   321,577.15/443,754.43 = 178,323.79/x
3. Step 3: Cross multiply
   321,577.15x = 443,754.43 × 178,323.79
4. Step 4: Simplify right side
   321,577.15x = 79,131,971,786.89
5. Step 5: Solve for x
   x = 79,131,971,786.89/321,577.15
6. Step 6: Final answer
   x = 246,074.61