Finding the Fourth Proportional to 31,215.16, 43,077.06 and 17,067.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,215.16 : 43,077.06 = 17,067.99 : x
2. Step 2: Convert to fraction form
   31,215.16/43,077.06 = 17,067.99/x
3. Step 3: Cross multiply
   31,215.16x = 43,077.06 × 17,067.99
4. Step 4: Simplify right side
   31,215.16x = 735,238,829.31
5. Step 5: Solve for x
   x = 735,238,829.31/31,215.16
6. Step 6: Final answer
   x = 23,553.90