Finding the Fourth Proportional to 140,061.25, 209,198.77 and 126,713.67

Step by Step Solution

1. Step 1: Write the proportion equation
   140,061.25 : 209,198.77 = 126,713.67 : x
2. Step 2: Convert to fraction form
   140,061.25/209,198.77 = 126,713.67/x
3. Step 3: Cross multiply
   140,061.25x = 209,198.77 × 126,713.67
4. Step 4: Simplify right side
   140,061.25x = 26,508,342,804.91
5. Step 5: Solve for x
   x = 26,508,342,804.91/140,061.25
6. Step 6: Final answer
   x = 189,262.50