Finding the Fourth Proportional to 298,976.10, 448,464.15 and 260,096.10

Step by Step Solution

1. Step 1: Write the proportion equation
   298,976.10 : 448,464.15 = 260,096.10 : x
2. Step 2: Convert to fraction form
   298,976.10/448,464.15 = 260,096.10/x
3. Step 3: Cross multiply
   298,976.10x = 448,464.15 × 260,096.10
4. Step 4: Simplify right side
   298,976.10x = 116,643,776,404.82
5. Step 5: Solve for x
   x = 116,643,776,404.82/298,976.10
6. Step 6: Final answer
   x = 390,144.15