Finding the Fourth Proportional to 111,217.97, 153,550.52 and 85,676.24

Step by Step Solution

1. Step 1: Write the proportion equation
   111,217.97 : 153,550.52 = 85,676.24 : x
2. Step 2: Convert to fraction form
   111,217.97/153,550.52 = 85,676.24/x
3. Step 3: Cross multiply
   111,217.97x = 153,550.52 × 85,676.24
4. Step 4: Simplify right side
   111,217.97x = 13,155,631,801.71
5. Step 5: Solve for x
   x = 13,155,631,801.71/111,217.97
6. Step 6: Final answer
   x = 118,286.92