Finding the Fourth Proportional to 443,116.34, 664,608.81 and 143,623.34

Step by Step Solution

1. Step 1: Write the proportion equation
   443,116.34 : 664,608.81 = 143,623.34 : x
2. Step 2: Convert to fraction form
   443,116.34/664,608.81 = 143,623.34/x
3. Step 3: Cross multiply
   443,116.34x = 664,608.81 × 143,623.34
4. Step 4: Simplify right side
   443,116.34x = 95,453,337,085.63
5. Step 5: Solve for x
   x = 95,453,337,085.63/443,116.34
6. Step 6: Final answer
   x = 215,413.72