Finding the Fourth Proportional to 31,146.75, 42,983.70 and 17,719.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,146.75 : 42,983.70 = 17,719.23 : x
2. Step 2: Convert to fraction form
   31,146.75/42,983.70 = 17,719.23/x
3. Step 3: Cross multiply
   31,146.75x = 42,983.70 × 17,719.23
4. Step 4: Simplify right side
   31,146.75x = 761,638,066.55
5. Step 5: Solve for x
   x = 761,638,066.55/31,146.75
6. Step 6: Final answer
   x = 24,453.21