Finding the Fourth Proportional to 321,178.56, 443,273.58 and 185,185.91

Step by Step Solution

1. Step 1: Write the proportion equation
   321,178.56 : 443,273.58 = 185,185.91 : x
2. Step 2: Convert to fraction form
   321,178.56/443,273.58 = 185,185.91/x
3. Step 3: Cross multiply
   321,178.56x = 443,273.58 × 185,185.91
4. Step 4: Simplify right side
   321,178.56x = 82,088,019,074.89
5. Step 5: Solve for x
   x = 82,088,019,074.89/321,178.56
6. Step 6: Final answer
   x = 255,583.74