Finding the Fourth Proportional to 31,090.72, 42,903.94 and 16,943.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.72 : 42,903.94 = 16,943.26 : x
2. Step 2: Convert to fraction form
   31,090.72/42,903.94 = 16,943.26/x
3. Step 3: Cross multiply
   31,090.72x = 42,903.94 × 16,943.26
4. Step 4: Simplify right side
   31,090.72x = 726,932,311.21
5. Step 5: Solve for x
   x = 726,932,311.21/31,090.72
6. Step 6: Final answer
   x = 23,381.01