Finding the Fourth Proportional to 142,147.38, 196,161.03 and 78,483.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,147.38 : 196,161.03 = 78,483.54 : x
2. Step 2: Convert to fraction form
   142,147.38/196,161.03 = 78,483.54/x
3. Step 3: Cross multiply
   142,147.38x = 196,161.03 × 78,483.54
4. Step 4: Simplify right side
   142,147.38x = 15,395,412,044.45
5. Step 5: Solve for x
   x = 15,395,412,044.45/142,147.38
6. Step 6: Final answer
   x = 108,305.99