Finding the Fourth Proportional to 31,145.22, 42,980.22 and 17,716.44

Step by Step Solution

1. Step 1: Write the proportion equation
   31,145.22 : 42,980.22 = 17,716.44 : x
2. Step 2: Convert to fraction form
   31,145.22/42,980.22 = 17,716.44/x
3. Step 3: Cross multiply
   31,145.22x = 42,980.22 × 17,716.44
4. Step 4: Simplify right side
   31,145.22x = 761,456,488.82
5. Step 5: Solve for x
   x = 761,456,488.82/31,145.22
6. Step 6: Final answer
   x = 24,448.58