Finding the Fourth Proportional to 142,018.30, 195,996.96 and 80,783.68

Step by Step Solution

1. Step 1: Write the proportion equation
   142,018.30 : 195,996.96 = 80,783.68 : x
2. Step 2: Convert to fraction form
   142,018.30/195,996.96 = 80,783.68/x
3. Step 3: Cross multiply
   142,018.30x = 195,996.96 × 80,783.68
4. Step 4: Simplify right side
   142,018.30x = 15,833,355,697.61
5. Step 5: Solve for x
   x = 15,833,355,697.61/142,018.30
6. Step 6: Final answer
   x = 111,488.14