Finding the Fourth Proportional to 31,085.49, 42,896.63 and 17,656.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.49 : 42,896.63 = 17,656.70 : x
2. Step 2: Convert to fraction form
   31,085.49/42,896.63 = 17,656.70/x
3. Step 3: Cross multiply
   31,085.49x = 42,896.63 × 17,656.70
4. Step 4: Simplify right side
   31,085.49x = 757,412,775.54
5. Step 5: Solve for x
   x = 757,412,775.54/31,085.49
6. Step 6: Final answer
   x = 24,365.48