Finding the Fourth Proportional to 142,110.72, 196,113.42 and 78,449.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,110.72 : 196,113.42 = 78,449.04 : x
2. Step 2: Convert to fraction form
   142,110.72/196,113.42 = 78,449.04/x
3. Step 3: Cross multiply
   142,110.72x = 196,113.42 × 78,449.04
4. Step 4: Simplify right side
   142,110.72x = 15,384,909,530.12
5. Step 5: Solve for x
   x = 15,384,909,530.12/142,110.72
6. Step 6: Final answer
   x = 108,260.02