Finding the Fourth Proportional to 443,300.49, 611,720.10 and 261,977.94

Step by Step Solution

1. Step 1: Write the proportion equation
   443,300.49 : 611,720.10 = 261,977.94 : x
2. Step 2: Convert to fraction form
   443,300.49/611,720.10 = 261,977.94/x
3. Step 3: Cross multiply
   443,300.49x = 611,720.10 × 261,977.94
4. Step 4: Simplify right side
   443,300.49x = 160,257,171,654.59
5. Step 5: Solve for x
   x = 160,257,171,654.59/443,300.49
6. Step 6: Final answer
   x = 361,509.12