Finding the Fourth Proportional to 31,093.04, 42,908.40 and 16,945.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,093.04 : 42,908.40 = 16,945.88 : x
2. Step 2: Convert to fraction form
   31,093.04/42,908.40 = 16,945.88/x
3. Step 3: Cross multiply
   31,093.04x = 42,908.40 × 16,945.88
4. Step 4: Simplify right side
   31,093.04x = 727,120,382.85
5. Step 5: Solve for x
   x = 727,120,382.85/31,093.04
6. Step 6: Final answer
   x = 23,385.31