Finding the Fourth Proportional to 139,608.32, 192,615.98 and 79,174.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,608.32 : 192,615.98 = 79,174.22 : x
2. Step 2: Convert to fraction form
   139,608.32/192,615.98 = 79,174.22/x
3. Step 3: Cross multiply
   139,608.32x = 192,615.98 × 79,174.22
4. Step 4: Simplify right side
   139,608.32x = 15,250,219,976.04
5. Step 5: Solve for x
   x = 15,250,219,976.04/139,608.32
6. Step 6: Final answer
   x = 109,235.75