Finding the Fourth Proportional to 31,085.79, 42,896.79 and 17,655.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.79 : 42,896.79 = 17,655.27 : x
2. Step 2: Convert to fraction form
   31,085.79/42,896.79 = 17,655.27/x
3. Step 3: Cross multiply
   31,085.79x = 42,896.79 × 17,655.27
4. Step 4: Simplify right side
   31,085.79x = 757,354,409.58
5. Step 5: Solve for x
   x = 757,354,409.58/31,085.79
6. Step 6: Final answer
   x = 24,363.36