Finding the Fourth Proportional to 31,085.24, 42,896.28 and 17,656.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.24 : 42,896.28 = 17,656.45 : x
2. Step 2: Convert to fraction form
   31,085.24/42,896.28 = 17,656.45/x
3. Step 3: Cross multiply
   31,085.24x = 42,896.28 × 17,656.45
4. Step 4: Simplify right side
   31,085.24x = 757,395,981.98
5. Step 5: Solve for x
   x = 757,395,981.98/31,085.24
6. Step 6: Final answer
   x = 24,365.14