Finding the Fourth Proportional to 139,231.38, 192,093.57 and 78,796.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,231.38 : 192,093.57 = 78,796.02 : x
2. Step 2: Convert to fraction form
   139,231.38/192,093.57 = 78,796.02/x
3. Step 3: Cross multiply
   139,231.38x = 192,093.57 × 78,796.02
4. Step 4: Simplify right side
   139,231.38x = 15,136,208,783.59
5. Step 5: Solve for x
   x = 15,136,208,783.59/139,231.38
6. Step 6: Final answer
   x = 108,712.62