Finding the Fourth Proportional to 31,141.92, 42,976.08 and 16,994.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,141.92 : 42,976.08 = 16,994.88 : x
2. Step 2: Convert to fraction form
   31,141.92/42,976.08 = 16,994.88/x
3. Step 3: Cross multiply
   31,141.92x = 42,976.08 × 16,994.88
4. Step 4: Simplify right side
   31,141.92x = 730,373,322.47
5. Step 5: Solve for x
   x = 730,373,322.47/31,141.92
6. Step 6: Final answer
   x = 23,453.06