Finding the Fourth Proportional to 620,045.37, 855,606.83 and 361,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   620,045.37 : 855,606.83 = 361,944.72 : x
2. Step 2: Convert to fraction form
   620,045.37/855,606.83 = 361,944.72/x
3. Step 3: Cross multiply
   620,045.37x = 855,606.83 × 361,944.72
4. Step 4: Simplify right side
   620,045.37x = 309,682,372,704.71
5. Step 5: Solve for x
   x = 309,682,372,704.71/620,045.37
6. Step 6: Final answer
   x = 499,451.15