Finding the Fourth Proportional to 477,111.31, 658,404.75 and 262,246.78

Step by Step Solution

1. Step 1: Write the proportion equation
   477,111.31 : 658,404.75 = 262,246.78 : x
2. Step 2: Convert to fraction form
   477,111.31/658,404.75 = 262,246.78/x
3. Step 3: Cross multiply
   477,111.31x = 658,404.75 × 262,246.78
4. Step 4: Simplify right side
   477,111.31x = 172,664,525,624.21
5. Step 5: Solve for x
   x = 172,664,525,624.21/477,111.31
6. Step 6: Final answer
   x = 361,895.69