Finding the Fourth Proportional to 31,139.44, 42,973.34 and 16,993.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139.44 : 42,973.34 = 16,993.19 : x
2. Step 2: Convert to fraction form
   31,139.44/42,973.34 = 16,993.19/x
3. Step 3: Cross multiply
   31,139.44x = 42,973.34 × 16,993.19
4. Step 4: Simplify right side
   31,139.44x = 730,254,154.02
5. Step 5: Solve for x
   x = 730,254,154.02/31,139.44
6. Step 6: Final answer
   x = 23,451.10