Finding the Fourth Proportional to 142,793.94, 196,992.22 and 91,797.21

Step by Step Solution

1. Step 1: Write the proportion equation
   142,793.94 : 196,992.22 = 91,797.21 : x
2. Step 2: Convert to fraction form
   142,793.94/196,992.22 = 91,797.21/x
3. Step 3: Cross multiply
   142,793.94x = 196,992.22 × 91,797.21
4. Step 4: Simplify right side
   142,793.94x = 18,083,336,187.71
5. Step 5: Solve for x
   x = 18,083,336,187.71/142,793.94
6. Step 6: Final answer
   x = 126,639.38