Finding the Fourth Proportional to 441,105.60, 616,216.20 and 441,105.60

Step by Step Solution

1. Step 1: Write the proportion equation
   441,105.60 : 616,216.20 = 441,105.60 : x
2. Step 2: Convert to fraction form
   441,105.60/616,216.20 = 441,105.60/x
3. Step 3: Cross multiply
   441,105.60x = 616,216.20 × 441,105.60
4. Step 4: Simplify right side
   441,105.60x = 271,816,416,630.72
5. Step 5: Solve for x
   x = 271,816,416,630.72/441,105.60
6. Step 6: Final answer
   x = 616,216.20