Finding the Fourth Proportional to 111,303.56, 153,591.18 and 65,979.20

Step by Step Solution

1. Step 1: Write the proportion equation
   111,303.56 : 153,591.18 = 65,979.20 : x
2. Step 2: Convert to fraction form
   111,303.56/153,591.18 = 65,979.20/x
3. Step 3: Cross multiply
   111,303.56x = 153,591.18 × 65,979.20
4. Step 4: Simplify right side
   111,303.56x = 10,133,823,183.46
5. Step 5: Solve for x
   x = 10,133,823,183.46/111,303.56
6. Step 6: Final answer
   x = 91,046.71