Finding the Fourth Proportional to 31,140.94, 42,975.41 and 16,994.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,140.94 : 42,975.41 = 16,994.69 : x
2. Step 2: Convert to fraction form
   31,140.94/42,975.41 = 16,994.69/x
3. Step 3: Cross multiply
   31,140.94x = 42,975.41 × 16,994.69
4. Step 4: Simplify right side
   31,140.94x = 730,353,770.57
5. Step 5: Solve for x
   x = 730,353,770.57/31,140.94
6. Step 6: Final answer
   x = 23,453.17