Finding the Fourth Proportional to 139,439.50, 192,395.73 and 79,004.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,439.50 : 192,395.73 = 79,004.86 : x
2. Step 2: Convert to fraction form
   139,439.50/192,395.73 = 79,004.86/x
3. Step 3: Cross multiply
   139,439.50x = 192,395.73 × 79,004.86
4. Step 4: Simplify right side
   139,439.50x = 15,200,197,713.25
5. Step 5: Solve for x
   x = 15,200,197,713.25/139,439.50
6. Step 6: Final answer
   x = 109,009.27