Finding the Fourth Proportional to 111,845.56, 154,288.06 and 66,491.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,845.56 : 154,288.06 = 66,491.29 : x
2. Step 2: Convert to fraction form
   111,845.56/154,288.06 = 66,491.29/x
3. Step 3: Cross multiply
   111,845.56x = 154,288.06 × 66,491.29
4. Step 4: Simplify right side
   111,845.56x = 10,258,811,037.10
5. Step 5: Solve for x
   x = 10,258,811,037.10/111,845.56
6. Step 6: Final answer
   x = 91,723.01