Finding the Fourth Proportional to 111,688.56, 154,137.48 and 69,275.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111,688.56 : 154,137.48 = 69,275.28 : x
2. Step 2: Convert to fraction form
   111,688.56/154,137.48 = 69,275.28/x
3. Step 3: Cross multiply
   111,688.56x = 154,137.48 × 69,275.28
4. Step 4: Simplify right side
   111,688.56x = 10,677,917,085.49
5. Step 5: Solve for x
   x = 10,677,917,085.49/111,688.56
6. Step 6: Final answer
   x = 95,604.39