Finding the Fourth Proportional to 111,589.76, 154,016.22 and 66,292.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111,589.76 : 154,016.22 = 66,292.91 : x
2. Step 2: Convert to fraction form
   111,589.76/154,016.22 = 66,292.91/x
3. Step 3: Cross multiply
   111,589.76x = 154,016.22 × 66,292.91
4. Step 4: Simplify right side
   111,589.76x = 10,210,182,640.92
5. Step 5: Solve for x
   x = 10,210,182,640.92/111,589.76
6. Step 6: Final answer
   x = 91,497.49