Finding the Fourth Proportional to 139,763.43, 192,878.82 and 79,336.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,763.43 : 192,878.82 = 79,336.62 : x
2. Step 2: Convert to fraction form
   139,763.43/192,878.82 = 79,336.62/x
3. Step 3: Cross multiply
   139,763.43x = 192,878.82 × 79,336.62
4. Step 4: Simplify right side
   139,763.43x = 15,302,353,648.39
5. Step 5: Solve for x
   x = 15,302,353,648.39/139,763.43
6. Step 6: Final answer
   x = 109,487.54