Finding the Fourth Proportional to 31,462.63, 43,419.24 and 17,123.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,462.63 : 43,419.24 = 17,123.40 : x
2. Step 2: Convert to fraction form
   31,462.63/43,419.24 = 17,123.40/x
3. Step 3: Cross multiply
   31,462.63x = 43,419.24 × 17,123.40
4. Step 4: Simplify right side
   31,462.63x = 743,485,014.22
5. Step 5: Solve for x
   x = 743,485,014.22/31,462.63
6. Step 6: Final answer
   x = 23,630.74