Finding the Fourth Proportional to 139,570.11, 192,563.31 and 79,136.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,570.11 : 192,563.31 = 79,136.01 : x
2. Step 2: Convert to fraction form
   139,570.11/192,563.31 = 79,136.01/x
3. Step 3: Cross multiply
   139,570.11x = 192,563.31 × 79,136.01
4. Step 4: Simplify right side
   139,570.11x = 15,238,692,025.79
5. Step 5: Solve for x
   x = 15,238,692,025.79/139,570.11
6. Step 6: Final answer
   x = 109,183.06