Finding the Fourth Proportional to 139,224.39, 192,132.51 and 78,795

Step by Step Solution

1. Step 1: Write the proportion equation
   139,224.39 : 192,132.51 = 78,795 : x
2. Step 2: Convert to fraction form
   139,224.39/192,132.51 = 78,795/x
3. Step 3: Cross multiply
   139,224.39x = 192,132.51 × 78,795
4. Step 4: Simplify right side
   139,224.39x = 15,139,081,125.45
5. Step 5: Solve for x
   x = 15,139,081,125.45/139,224.39
6. Step 6: Final answer
   x = 108,738.71