Finding the Fourth Proportional to 85,870.05, 128,791.31 and 23,525.97

Step by Step Solution

1. Step 1: Write the proportion equation
   85,870.05 : 128,791.31 = 23,525.97 : x
2. Step 2: Convert to fraction form
   85,870.05/128,791.31 = 23,525.97/x
3. Step 3: Cross multiply
   85,870.05x = 128,791.31 × 23,525.97
4. Step 4: Simplify right side
   85,870.05x = 3,029,940,377.69
5. Step 5: Solve for x
   x = 3,029,940,377.69/85,870.05
6. Step 6: Final answer
   x = 35,285.18