Finding the Fourth Proportional to 142,620.78, 196,801.74 and 82,179.39

Step by Step Solution

1. Step 1: Write the proportion equation
   142,620.78 : 196,801.74 = 82,179.39 : x
2. Step 2: Convert to fraction form
   142,620.78/196,801.74 = 82,179.39/x
3. Step 3: Cross multiply
   142,620.78x = 196,801.74 × 82,179.39
4. Step 4: Simplify right side
   142,620.78x = 16,173,046,944.14
5. Step 5: Solve for x
   x = 16,173,046,944.14/142,620.78
6. Step 6: Final answer
   x = 113,398.95