Finding the Fourth Proportional to 321,533.31, 443,683.98 and 185,611.05

Step by Step Solution

1. Step 1: Write the proportion equation
   321,533.31 : 443,683.98 = 185,611.05 : x
2. Step 2: Convert to fraction form
   321,533.31/443,683.98 = 185,611.05/x
3. Step 3: Cross multiply
   321,533.31x = 443,683.98 × 185,611.05
4. Step 4: Simplify right side
   321,533.31x = 82,352,649,395.98
5. Step 5: Solve for x
   x = 82,352,649,395.98/321,533.31
6. Step 6: Final answer
   x = 256,124.78