Finding the Fourth Proportional to 139,433.64, 192,410.52 and 75,771

Step by Step Solution

1. Step 1: Write the proportion equation
   139,433.64 : 192,410.52 = 75,771 : x
2. Step 2: Convert to fraction form
   139,433.64/192,410.52 = 75,771/x
3. Step 3: Cross multiply
   139,433.64x = 192,410.52 × 75,771
4. Step 4: Simplify right side
   139,433.64x = 14,579,137,510.92
5. Step 5: Solve for x
   x = 14,579,137,510.92/139,433.64
6. Step 6: Final answer
   x = 104,559.69