Finding the Fourth Proportional to 443,540.63, 665,301.39 and 123,683.98

Step by Step Solution

1. Step 1: Write the proportion equation
   443,540.63 : 665,301.39 = 123,683.98 : x
2. Step 2: Convert to fraction form
   443,540.63/665,301.39 = 123,683.98/x
3. Step 3: Cross multiply
   443,540.63x = 665,301.39 × 123,683.98
4. Step 4: Simplify right side
   443,540.63x = 82,287,120,737.12
5. Step 5: Solve for x
   x = 82,287,120,737.12/443,540.63
6. Step 6: Final answer
   x = 185,523.30