Finding the Fourth Proportional to 31,117.82, 42,941.66 and 17,690.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,117.82 : 42,941.66 = 17,690.54 : x
2. Step 2: Convert to fraction form
   31,117.82/42,941.66 = 17,690.54/x
3. Step 3: Cross multiply
   31,117.82x = 42,941.66 × 17,690.54
4. Step 4: Simplify right side
   31,117.82x = 759,661,153.90
5. Step 5: Solve for x
   x = 759,661,153.90/31,117.82
6. Step 6: Final answer
   x = 24,412.42