Finding the Fourth Proportional to 114,825.75, 172,215.49 and 72,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   114,825.75 : 172,215.49 = 72,112.10 : x
2. Step 2: Convert to fraction form
   114,825.75/172,215.49 = 72,112.10/x
3. Step 3: Cross multiply
   114,825.75x = 172,215.49 × 72,112.10
4. Step 4: Simplify right side
   114,825.75x = 12,418,820,456.15
5. Step 5: Solve for x
   x = 12,418,820,456.15/114,825.75
6. Step 6: Final answer
   x = 108,153.62