Finding the Fourth Proportional to 447,111.78, 616,867.29 and 277,313.10

Step by Step Solution

1. Step 1: Write the proportion equation
   447,111.78 : 616,867.29 = 277,313.10 : x
2. Step 2: Convert to fraction form
   447,111.78/616,867.29 = 277,313.10/x
3. Step 3: Cross multiply
   447,111.78x = 616,867.29 × 277,313.10
4. Step 4: Simplify right side
   447,111.78x = 171,065,380,478.50
5. Step 5: Solve for x
   x = 171,065,380,478.50/447,111.78
6. Step 6: Final answer
   x = 382,600.92