Finding the Fourth Proportional to 465,810.72, 642,738.70 and 261,833.34

Step by Step Solution

1. Step 1: Write the proportion equation
   465,810.72 : 642,738.70 = 261,833.34 : x
2. Step 2: Convert to fraction form
   465,810.72/642,738.70 = 261,833.34/x
3. Step 3: Cross multiply
   465,810.72x = 642,738.70 × 261,833.34
4. Step 4: Simplify right side
   465,810.72x = 168,290,420,568.26
5. Step 5: Solve for x
   x = 168,290,420,568.26/465,810.72
6. Step 6: Final answer
   x = 361,284.99