Finding the Fourth Proportional to 31,058.15, 42,858.96 and 16,910.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,058.15 : 42,858.96 = 16,910.96 : x
2. Step 2: Convert to fraction form
   31,058.15/42,858.96 = 16,910.96/x
3. Step 3: Cross multiply
   31,058.15x = 42,858.96 × 16,910.96
4. Step 4: Simplify right side
   31,058.15x = 724,786,158.20
5. Step 5: Solve for x
   x = 724,786,158.20/31,058.15
6. Step 6: Final answer
   x = 23,336.42