Finding the Fourth Proportional to 264,872.82, 397,300.31 and 115,113.12

Step by Step Solution

1. Step 1: Write the proportion equation
   264,872.82 : 397,300.31 = 115,113.12 : x
2. Step 2: Convert to fraction form
   264,872.82/397,300.31 = 115,113.12/x
3. Step 3: Cross multiply
   264,872.82x = 397,300.31 × 115,113.12
4. Step 4: Simplify right side
   264,872.82x = 45,734,478,757.69
5. Step 5: Solve for x
   x = 45,734,478,757.69/264,872.82
6. Step 6: Final answer
   x = 172,665.81