Finding the Fourth Proportional to 31,114.91, 42,938.84 and 16,967.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,114.91 : 42,938.84 = 16,967.72 : x
2. Step 2: Convert to fraction form
   31,114.91/42,938.84 = 16,967.72/x
3. Step 3: Cross multiply
   31,114.91x = 42,938.84 × 16,967.72
4. Step 4: Simplify right side
   31,114.91x = 728,574,214.24
5. Step 5: Solve for x
   x = 728,574,214.24/31,114.91
6. Step 6: Final answer
   x = 23,415.60