Finding the Fourth Proportional to 443,557.61, 665,196.79 and 143,968.98

Step by Step Solution

1. Step 1: Write the proportion equation
   443,557.61 : 665,196.79 = 143,968.98 : x
2. Step 2: Convert to fraction form
   443,557.61/665,196.79 = 143,968.98/x
3. Step 3: Cross multiply
   443,557.61x = 665,196.79 × 143,968.98
4. Step 4: Simplify right side
   443,557.61x = 95,767,703,355.57
5. Step 5: Solve for x
   x = 95,767,703,355.57/443,557.61
6. Step 6: Final answer
   x = 215,908.15