Finding the Fourth Proportional to 31,105.42, 42,925.95 and 16,958.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.42 : 42,925.95 = 16,958.26 : x
2. Step 2: Convert to fraction form
   31,105.42/42,925.95 = 16,958.26/x
3. Step 3: Cross multiply
   31,105.42x = 42,925.95 × 16,958.26
4. Step 4: Simplify right side
   31,105.42x = 727,949,474.50
5. Step 5: Solve for x
   x = 727,949,474.50/31,105.42
6. Step 6: Final answer
   x = 23,402.66