Finding the Fourth Proportional to 111,311.38, 153,615.99 and 66,016.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,311.38 : 153,615.99 = 66,016.18 : x
2. Step 2: Convert to fraction form
   111,311.38/153,615.99 = 66,016.18/x
3. Step 3: Cross multiply
   111,311.38x = 153,615.99 × 66,016.18
4. Step 4: Simplify right side
   111,311.38x = 10,141,140,846.72
5. Step 5: Solve for x
   x = 10,141,140,846.72/111,311.38
6. Step 6: Final answer
   x = 91,106.06