Finding the Fourth Proportional to 111,129.72, 153,175.50 and 82,825.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,129.72 : 153,175.50 = 82,825.08 : x
2. Step 2: Convert to fraction form
   111,129.72/153,175.50 = 82,825.08/x
3. Step 3: Cross multiply
   111,129.72x = 153,175.50 × 82,825.08
4. Step 4: Simplify right side
   111,129.72x = 12,686,773,041.54
5. Step 5: Solve for x
   x = 12,686,773,041.54/111,129.72
6. Step 6: Final answer
   x = 114,161.84