Finding the Fourth Proportional to 415,144.94, 620,442.83 and 303,061.19

Step by Step Solution

1. Step 1: Write the proportion equation
   415,144.94 : 620,442.83 = 303,061.19 : x
2. Step 2: Convert to fraction form
   415,144.94/620,442.83 = 303,061.19/x
3. Step 3: Cross multiply
   415,144.94x = 620,442.83 × 303,061.19
4. Step 4: Simplify right side
   415,144.94x = 188,032,137,769.25
5. Step 5: Solve for x
   x = 188,032,137,769.25/415,144.94
6. Step 6: Final answer
   x = 452,931.31