Finding the Fourth Proportional to 139,661.79, 192,737.61 and 79,234.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,661.79 : 192,737.61 = 79,234.98 : x
2. Step 2: Convert to fraction form
   139,661.79/192,737.61 = 79,234.98/x
3. Step 3: Cross multiply
   139,661.79x = 192,737.61 × 79,234.98
4. Step 4: Simplify right side
   139,661.79x = 15,271,560,673.60
5. Step 5: Solve for x
   x = 15,271,560,673.60/139,661.79
6. Step 6: Final answer
   x = 109,346.73