Finding the Fourth Proportional to 120,976.10, 169,541.50 and 120,976.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,976.10 : 169,541.50 = 120,976.10 : x
2. Step 2: Convert to fraction form
   120,976.10/169,541.50 = 120,976.10/x
3. Step 3: Cross multiply
   120,976.10x = 169,541.50 × 120,976.10
4. Step 4: Simplify right side
   120,976.10x = 20,510,469,458.15
5. Step 5: Solve for x
   x = 20,510,469,458.15/120,976.10
6. Step 6: Final answer
   x = 169,541.50