Finding the Fourth Proportional to 31,058.01, 42,858.77 and 16,910.87

Step by Step Solution

1. Step 1: Write the proportion equation
   31,058.01 : 42,858.77 = 16,910.87 : x
2. Step 2: Convert to fraction form
   31,058.01/42,858.77 = 16,910.87/x
3. Step 3: Cross multiply
   31,058.01x = 42,858.77 × 16,910.87
4. Step 4: Simplify right side
   31,058.01x = 724,778,788.98
5. Step 5: Solve for x
   x = 724,778,788.98/31,058.01
6. Step 6: Final answer
   x = 23,336.29