Finding the Fourth Proportional to 139,672.67, 192,752.64 and 79,245.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,672.67 : 192,752.64 = 79,245.86 : x
2. Step 2: Convert to fraction form
   139,672.67/192,752.64 = 79,245.86/x
3. Step 3: Cross multiply
   139,672.67x = 192,752.64 × 79,245.86
4. Step 4: Simplify right side
   139,672.67x = 15,274,847,760.31
5. Step 5: Solve for x
   x = 15,274,847,760.31/139,672.67
6. Step 6: Final answer
   x = 109,361.75