Finding the Fourth Proportional to 321,663.90, 443,887.61 and 185,693.25

Step by Step Solution

1. Step 1: Write the proportion equation
   321,663.90 : 443,887.61 = 185,693.25 : x
2. Step 2: Convert to fraction form
   321,663.90/443,887.61 = 185,693.25/x
3. Step 3: Cross multiply
   321,663.90x = 443,887.61 × 185,693.25
4. Step 4: Simplify right side
   321,663.90x = 82,426,932,007.17
5. Step 5: Solve for x
   x = 82,426,932,007.17/321,663.90
6. Step 6: Final answer
   x = 256,251.73