Finding the Fourth Proportional to 31,090.23, 42,904.52 and 16,943.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.23 : 42,904.52 = 16,943.06 : x
2. Step 2: Convert to fraction form
   31,090.23/42,904.52 = 16,943.06/x
3. Step 3: Cross multiply
   31,090.23x = 42,904.52 × 16,943.06
4. Step 4: Simplify right side
   31,090.23x = 726,933,942.71
5. Step 5: Solve for x
   x = 726,933,942.71/31,090.23
6. Step 6: Final answer
   x = 23,381.43