Finding the Fourth Proportional to 139,233.94, 192,152.32 and 78,804.36

Step by Step Solution

1. Step 1: Write the proportion equation
   139,233.94 : 192,152.32 = 78,804.36 : x
2. Step 2: Convert to fraction form
   139,233.94/192,152.32 = 78,804.36/x
3. Step 3: Cross multiply
   139,233.94x = 192,152.32 × 78,804.36
4. Step 4: Simplify right side
   139,233.94x = 15,142,440,403.10
5. Step 5: Solve for x
   x = 15,142,440,403.10/139,233.94
6. Step 6: Final answer
   x = 108,755.38