Finding the Fourth Proportional to 31,105.15, 42,925.75 and 17,493.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.15 : 42,925.75 = 17,493.45 : x
2. Step 2: Convert to fraction form
   31,105.15/42,925.75 = 17,493.45/x
3. Step 3: Cross multiply
   31,105.15x = 42,925.75 × 17,493.45
4. Step 4: Simplify right side
   31,105.15x = 750,919,590.52
5. Step 5: Solve for x
   x = 750,919,590.52/31,105.15
6. Step 6: Final answer
   x = 24,141.33