Finding the Fourth Proportional to 323,667.69, 446,852.73 and 287,758.36

Step by Step Solution

1. Step 1: Write the proportion equation
   323,667.69 : 446,852.73 = 287,758.36 : x
2. Step 2: Convert to fraction form
   323,667.69/446,852.73 = 287,758.36/x
3. Step 3: Cross multiply
   323,667.69x = 446,852.73 × 287,758.36
4. Step 4: Simplify right side
   323,667.69x = 128,585,608,746.32
5. Step 5: Solve for x
   x = 128,585,608,746.32/323,667.69
6. Step 6: Final answer
   x = 397,276.63