Finding the Fourth Proportional to 142,018.68, 195,996.78 and 78,362.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,018.68 : 195,996.78 = 78,362.04 : x
2. Step 2: Convert to fraction form
   142,018.68/195,996.78 = 78,362.04/x
3. Step 3: Cross multiply
   142,018.68x = 195,996.78 × 78,362.04
4. Step 4: Simplify right side
   142,018.68x = 15,358,707,514.23
5. Step 5: Solve for x
   x = 15,358,707,514.23/142,018.68
6. Step 6: Final answer
   x = 108,145.69