Finding the Fourth Proportional to 31,090.35, 42,904.74 and 16,943.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.35 : 42,904.74 = 16,943.19 : x
2. Step 2: Convert to fraction form
   31,090.35/42,904.74 = 16,943.19/x
3. Step 3: Cross multiply
   31,090.35x = 42,904.74 × 16,943.19
4. Step 4: Simplify right side
   31,090.35x = 726,943,161.72
5. Step 5: Solve for x
   x = 726,943,161.72/31,090.35
6. Step 6: Final answer
   x = 23,381.63