Finding the Fourth Proportional to 108,020.10, 161,738.55 and 108,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,020.10 : 161,738.55 = 108,020.10 : x
2. Step 2: Convert to fraction form
   108,020.10/161,738.55 = 108,020.10/x
3. Step 3: Cross multiply
   108,020.10x = 161,738.55 × 108,020.10
4. Step 4: Simplify right side
   108,020.10x = 17,471,014,344.86
5. Step 5: Solve for x
   x = 17,471,014,344.86/108,020.10
6. Step 6: Final answer
   x = 161,738.55