Finding the Fourth Proportional to 31,105.40, 42,925.44 and 17,676.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.40 : 42,925.44 = 17,676.68 : x
2. Step 2: Convert to fraction form
   31,105.40/42,925.44 = 17,676.68/x
3. Step 3: Cross multiply
   31,105.40x = 42,925.44 × 17,676.68
4. Step 4: Simplify right side
   31,105.40x = 758,779,118.40
5. Step 5: Solve for x
   x = 758,779,118.40/31,105.40
6. Step 6: Final answer
   x = 24,393.81