Finding the Fourth Proportional to 404,982.12, 608,097.42 and 342,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   404,982.12 : 608,097.42 = 342,621.72 : x
2. Step 2: Convert to fraction form
   404,982.12/608,097.42 = 342,621.72/x
3. Step 3: Cross multiply
   404,982.12x = 608,097.42 × 342,621.72
4. Step 4: Simplify right side
   404,982.12x = 208,347,383,967.96
5. Step 5: Solve for x
   x = 208,347,383,967.96/404,982.12
6. Step 6: Final answer
   x = 514,460.70