Finding the Fourth Proportional to 262,964.03, 394,196.31 and 85,346.82

Step by Step Solution

1. Step 1: Write the proportion equation
   262,964.03 : 394,196.31 = 85,346.82 : x
2. Step 2: Convert to fraction form
   262,964.03/394,196.31 = 85,346.82/x
3. Step 3: Cross multiply
   262,964.03x = 394,196.31 × 85,346.82
4. Step 4: Simplify right side
   262,964.03x = 33,643,401,514.23
5. Step 5: Solve for x
   x = 33,643,401,514.23/262,964.03
6. Step 6: Final answer
   x = 127,939.18