Finding the Fourth Proportional to 612,017.94, 844,567.89 and 340,078.86

Step by Step Solution

1. Step 1: Write the proportion equation
   612,017.94 : 844,567.89 = 340,078.86 : x
2. Step 2: Convert to fraction form
   612,017.94/844,567.89 = 340,078.86/x
3. Step 3: Cross multiply
   612,017.94x = 844,567.89 × 340,078.86
4. Step 4: Simplify right side
   612,017.94x = 287,219,688,390.94
5. Step 5: Solve for x
   x = 287,219,688,390.94/612,017.94
6. Step 6: Final answer
   x = 469,299.46