Finding the Fourth Proportional to 31,141.18, 42,975.12 and 16,994.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,141.18 : 42,975.12 = 16,994.80 : x
2. Step 2: Convert to fraction form
   31,141.18/42,975.12 = 16,994.80/x
3. Step 3: Cross multiply
   31,141.18x = 42,975.12 × 16,994.80
4. Step 4: Simplify right side
   31,141.18x = 730,353,569.38
5. Step 5: Solve for x
   x = 730,353,569.38/31,141.18
6. Step 6: Final answer
   x = 23,452.98