Finding the Fourth Proportional to 142,645.44, 196,850.72 and 78,983.24

Step by Step Solution

1. Step 1: Write the proportion equation
   142,645.44 : 196,850.72 = 78,983.24 : x
2. Step 2: Convert to fraction form
   142,645.44/196,850.72 = 78,983.24/x
3. Step 3: Cross multiply
   142,645.44x = 196,850.72 × 78,983.24
4. Step 4: Simplify right side
   142,645.44x = 15,547,907,661.93
5. Step 5: Solve for x
   x = 15,547,907,661.93/142,645.44
6. Step 6: Final answer
   x = 108,996.88