Finding the Fourth Proportional to 447,112.78, 616,868.67 and 277,314.10

Step by Step Solution

1. Step 1: Write the proportion equation
   447,112.78 : 616,868.67 = 277,314.10 : x
2. Step 2: Convert to fraction form
   447,112.78/616,868.67 = 277,314.10/x
3. Step 3: Cross multiply
   447,112.78x = 616,868.67 × 277,314.10
4. Step 4: Simplify right side
   447,112.78x = 171,066,380,039.25
5. Step 5: Solve for x
   x = 171,066,380,039.25/447,112.78
6. Step 6: Final answer
   x = 382,602.30