Finding the Fourth Proportional to 142,578.68, 196,741.28 and 82,168.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,578.68 : 196,741.28 = 82,168.88 : x
2. Step 2: Convert to fraction form
   142,578.68/196,741.28 = 82,168.88/x
3. Step 3: Cross multiply
   142,578.68x = 196,741.28 × 82,168.88
4. Step 4: Simplify right side
   142,578.68x = 16,166,010,627.37
5. Step 5: Solve for x
   x = 16,166,010,627.37/142,578.68
6. Step 6: Final answer
   x = 113,383.09