Finding the Fourth Proportional to 31,114.94, 42,938.78 and 16,967.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,114.94 : 42,938.78 = 16,967.88 : x
2. Step 2: Convert to fraction form
   31,114.94/42,938.78 = 16,967.88/x
3. Step 3: Cross multiply
   31,114.94x = 42,938.78 × 16,967.88
4. Step 4: Simplify right side
   31,114.94x = 728,579,981.55
5. Step 5: Solve for x
   x = 728,579,981.55/31,114.94
6. Step 6: Final answer
   x = 23,415.76