Finding the Fourth Proportional to 322,443.92, 483,665.12 and 85,786.64

Step by Step Solution

1. Step 1: Write the proportion equation
   322,443.92 : 483,665.12 = 85,786.64 : x
2. Step 2: Convert to fraction form
   322,443.92/483,665.12 = 85,786.64/x
3. Step 3: Cross multiply
   322,443.92x = 483,665.12 × 85,786.64
4. Step 4: Simplify right side
   322,443.92x = 41,492,005,530.00
5. Step 5: Solve for x
   x = 41,492,005,530.00/322,443.92
6. Step 6: Final answer
   x = 128,679.76