Finding the Fourth Proportional to 262,300.72, 361,342.76 and 208,568.56

Step by Step Solution

1. Step 1: Write the proportion equation
   262,300.72 : 361,342.76 = 208,568.56 : x
2. Step 2: Convert to fraction form
   262,300.72/361,342.76 = 208,568.56/x
3. Step 3: Cross multiply
   262,300.72x = 361,342.76 × 208,568.56
4. Step 4: Simplify right side
   262,300.72x = 75,364,739,119.63
5. Step 5: Solve for x
   x = 75,364,739,119.63/262,300.72
6. Step 6: Final answer
   x = 287,321.89