Finding the Fourth Proportional to 404,179.47, 606,444.17 and 216,972.27

Step by Step Solution

1. Step 1: Write the proportion equation
   404,179.47 : 606,444.17 = 216,972.27 : x
2. Step 2: Convert to fraction form
   404,179.47/606,444.17 = 216,972.27/x
3. Step 3: Cross multiply
   404,179.47x = 606,444.17 × 216,972.27
4. Step 4: Simplify right side
   404,179.47x = 131,581,567,108.31
5. Step 5: Solve for x
   x = 131,581,567,108.31/404,179.47
6. Step 6: Final answer
   x = 325,552.33