Finding the Fourth Proportional to 142,227.19, 196,279.17 and 81,797.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,227.19 : 196,279.17 = 81,797.78 : x
2. Step 2: Convert to fraction form
   142,227.19/196,279.17 = 81,797.78/x
3. Step 3: Cross multiply
   142,227.19x = 196,279.17 × 81,797.78
4. Step 4: Simplify right side
   142,227.19x = 16,055,200,550.20
5. Step 5: Solve for x
   x = 16,055,200,550.20/142,227.19
6. Step 6: Final answer
   x = 112,884.18