Finding the Fourth Proportional to 139,253.04, 192,115.37 and 78,809.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,253.04 : 192,115.37 = 78,809.82 : x
2. Step 2: Convert to fraction form
   139,253.04/192,115.37 = 78,809.82/x
3. Step 3: Cross multiply
   139,253.04x = 192,115.37 × 78,809.82
4. Step 4: Simplify right side
   139,253.04x = 15,140,577,334.88
5. Step 5: Solve for x
   x = 15,140,577,334.88/139,253.04
6. Step 6: Final answer
   x = 108,727.09