Finding the Fourth Proportional to 142,467.24, 196,605.72 and 78,805.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,467.24 : 196,605.72 = 78,805.92 : x
2. Step 2: Convert to fraction form
   142,467.24/196,605.72 = 78,805.92/x
3. Step 3: Cross multiply
   142,467.24x = 196,605.72 × 78,805.92
4. Step 4: Simplify right side
   142,467.24x = 15,493,694,641.86
5. Step 5: Solve for x
   x = 15,493,694,641.86/142,467.24
6. Step 6: Final answer
   x = 108,752.68