Finding the Fourth Proportional to 139,481.39, 192,480.30 and 79,057.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,481.39 : 192,480.30 = 79,057.62 : x
2. Step 2: Convert to fraction form
   139,481.39/192,480.30 = 79,057.62/x
3. Step 3: Cross multiply
   139,481.39x = 192,480.30 × 79,057.62
4. Step 4: Simplify right side
   139,481.39x = 15,217,034,414.89
5. Step 5: Solve for x
   x = 15,217,034,414.89/139,481.39
6. Step 6: Final answer
   x = 109,097.24