Finding the Fourth Proportional to 501,855.35, 692,391.71 and 320,673.33

Step by Step Solution

1. Step 1: Write the proportion equation
   501,855.35 : 692,391.71 = 320,673.33 : x
2. Step 2: Convert to fraction form
   501,855.35/692,391.71 = 320,673.33/x
3. Step 3: Cross multiply
   501,855.35x = 692,391.71 × 320,673.33
4. Step 4: Simplify right side
   501,855.35x = 222,031,556,111.78
5. Step 5: Solve for x
   x = 222,031,556,111.78/501,855.35
6. Step 6: Final answer
   x = 442,421.42