Finding the Fourth Proportional to 620,047.37, 855,609.58 and 361,946.72

Step by Step Solution

1. Step 1: Write the proportion equation
   620,047.37 : 855,609.58 = 361,946.72 : x
2. Step 2: Convert to fraction form
   620,047.37/855,609.58 = 361,946.72/x
3. Step 3: Cross multiply
   620,047.37x = 855,609.58 × 361,946.72
4. Step 4: Simplify right side
   620,047.37x = 309,685,081,081.58
5. Step 5: Solve for x
   x = 309,685,081,081.58/620,047.37
6. Step 6: Final answer
   x = 499,453.91