Finding the Fourth Proportional to 139,606.32, 192,613.23 and 79,172.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,606.32 : 192,613.23 = 79,172.22 : x
2. Step 2: Convert to fraction form
   139,606.32/192,613.23 = 79,172.22/x
3. Step 3: Cross multiply
   139,606.32x = 192,613.23 × 79,172.22
4. Step 4: Simplify right side
   139,606.32x = 15,249,617,020.47
5. Step 5: Solve for x
   x = 15,249,617,020.47/139,606.32
6. Step 6: Final answer
   x = 109,233.00