Finding the Fourth Proportional to 262,007.50, 361,570.38 and 142,775.50

Step by Step Solution

1. Step 1: Write the proportion equation
   262,007.50 : 361,570.38 = 142,775.50 : x
2. Step 2: Convert to fraction form
   262,007.50/361,570.38 = 142,775.50/x
3. Step 3: Cross multiply
   262,007.50x = 361,570.38 × 142,775.50
4. Step 4: Simplify right side
   262,007.50x = 51,623,391,789.69
5. Step 5: Solve for x
   x = 51,623,391,789.69/262,007.50
6. Step 6: Final answer
   x = 197,030.21