Finding the Fourth Proportional to 443,446.18, 665,088.77 and 155,300.12

Step by Step Solution

1. Step 1: Write the proportion equation
   443,446.18 : 665,088.77 = 155,300.12 : x
2. Step 2: Convert to fraction form
   443,446.18/665,088.77 = 155,300.12/x
3. Step 3: Cross multiply
   443,446.18x = 665,088.77 × 155,300.12
4. Step 4: Simplify right side
   443,446.18x = 103,288,365,348.54
5. Step 5: Solve for x
   x = 103,288,365,348.54/443,446.18
6. Step 6: Final answer
   x = 232,921.99