Finding the Fourth Proportional to 321,076.86, 443,065.59 and 185,103.78

Step by Step Solution

1. Step 1: Write the proportion equation
   321,076.86 : 443,065.59 = 185,103.78 : x
2. Step 2: Convert to fraction form
   321,076.86/443,065.59 = 185,103.78/x
3. Step 3: Cross multiply
   321,076.86x = 443,065.59 × 185,103.78
4. Step 4: Simplify right side
   321,076.86x = 82,013,115,496.93
5. Step 5: Solve for x
   x = 82,013,115,496.93/321,076.86
6. Step 6: Final answer
   x = 255,431.41