Finding the Fourth Proportional to 31,090.81, 42,906.23 and 16,944.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,090.81 : 42,906.23 = 16,944.57 : x
2. Step 2: Convert to fraction form
   31,090.81/42,906.23 = 16,944.57/x
3. Step 3: Cross multiply
   31,090.81x = 42,906.23 × 16,944.57
4. Step 4: Simplify right side
   31,090.81x = 727,027,617.67
5. Step 5: Solve for x
   x = 727,027,617.67/31,090.81
6. Step 6: Final answer
   x = 23,384.00