Finding the Fourth Proportional to 142,632.96, 196,835.04 and 78,971.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,632.96 : 196,835.04 = 78,971.88 : x
2. Step 2: Convert to fraction form
   142,632.96/196,835.04 = 78,971.88/x
3. Step 3: Cross multiply
   142,632.96x = 196,835.04 × 78,971.88
4. Step 4: Simplify right side
   142,632.96x = 15,544,433,158.68
5. Step 5: Solve for x
   x = 15,544,433,158.68/142,632.96
6. Step 6: Final answer
   x = 108,982.06