Finding the Fourth Proportional to 321,945.42, 444,304.81 and 185,985.10

Step by Step Solution

1. Step 1: Write the proportion equation
   321,945.42 : 444,304.81 = 185,985.10 : x
2. Step 2: Convert to fraction form
   321,945.42/444,304.81 = 185,985.10/x
3. Step 3: Cross multiply
   321,945.42x = 444,304.81 × 185,985.10
4. Step 4: Simplify right side
   321,945.42x = 82,634,074,518.33
5. Step 5: Solve for x
   x = 82,634,074,518.33/321,945.42
6. Step 6: Final answer
   x = 256,671.07