Finding the Fourth Proportional to 139,665.92, 192,738.84 and 76,003.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,665.92 : 192,738.84 = 76,003.60 : x
2. Step 2: Convert to fraction form
   139,665.92/192,738.84 = 76,003.60/x
3. Step 3: Cross multiply
   139,665.92x = 192,738.84 × 76,003.60
4. Step 4: Simplify right side
   139,665.92x = 14,648,845,699.82
5. Step 5: Solve for x
   x = 14,648,845,699.82/139,665.92
6. Step 6: Final answer
   x = 104,884.90