Finding the Fourth Proportional to 443,300.10, 664,014.15 and 293,612.10

Step by Step Solution

1. Step 1: Write the proportion equation
   443,300.10 : 664,014.15 = 293,612.10 : x
2. Step 2: Convert to fraction form
   443,300.10/664,014.15 = 293,612.10/x
3. Step 3: Cross multiply
   443,300.10x = 664,014.15 × 293,612.10
4. Step 4: Simplify right side
   443,300.10x = 194,962,589,011.22
5. Step 5: Solve for x
   x = 194,962,589,011.22/443,300.10
6. Step 6: Final answer
   x = 439,798.21