Finding the Fourth Proportional to 142,234.08, 196,282.41 and 78,571.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,234.08 : 196,282.41 = 78,571.89 : x
2. Step 2: Convert to fraction form
   142,234.08/196,282.41 = 78,571.89/x
3. Step 3: Cross multiply
   142,234.08x = 196,282.41 × 78,571.89
4. Step 4: Simplify right side
   142,234.08x = 15,422,279,632.81
5. Step 5: Solve for x
   x = 15,422,279,632.81/142,234.08
6. Step 6: Final answer
   x = 108,428.87