Finding the Fourth Proportional to 139,234.38, 192,097.71 and 78,799.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,234.38 : 192,097.71 = 78,799.02 : x
2. Step 2: Convert to fraction form
   139,234.38/192,097.71 = 78,799.02/x
3. Step 3: Cross multiply
   139,234.38x = 192,097.71 × 78,799.02
4. Step 4: Simplify right side
   139,234.38x = 15,137,111,292.24
5. Step 5: Solve for x
   x = 15,137,111,292.24/139,234.38
6. Step 6: Final answer
   x = 108,716.76