Finding the Fourth Proportional to 31,105.62, 42,925.95 and 16,958.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.62 : 42,925.95 = 16,958.70 : x
2. Step 2: Convert to fraction form
   31,105.62/42,925.95 = 16,958.70/x
3. Step 3: Cross multiply
   31,105.62x = 42,925.95 × 16,958.70
4. Step 4: Simplify right side
   31,105.62x = 727,968,308.27
5. Step 5: Solve for x
   x = 727,968,308.27/31,105.62
6. Step 6: Final answer
   x = 23,403.11