Finding the Fourth Proportional to 111,300.31, 153,617.61 and 102,333.61

Step by Step Solution

1. Step 1: Write the proportion equation
   111,300.31 : 153,617.61 = 102,333.61 : x
2. Step 2: Convert to fraction form
   111,300.31/153,617.61 = 102,333.61/x
3. Step 3: Cross multiply
   111,300.31x = 153,617.61 × 102,333.61
4. Step 4: Simplify right side
   111,300.31x = 15,720,245,166.65
5. Step 5: Solve for x
   x = 15,720,245,166.65/111,300.31
6. Step 6: Final answer
   x = 141,241.70