Finding the Fourth Proportional to 31,141.32, 42,974.87 and 16,994.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,141.32 : 42,974.87 = 16,994.18 : x
2. Step 2: Convert to fraction form
   31,141.32/42,974.87 = 16,994.18/x
3. Step 3: Cross multiply
   31,141.32x = 42,974.87 × 16,994.18
4. Step 4: Simplify right side
   31,141.32x = 730,322,376.41
5. Step 5: Solve for x
   x = 730,322,376.41/31,141.32
6. Step 6: Final answer
   x = 23,451.88