Finding the Fourth Proportional to 31,239.10, 43,110.72 and 17,811.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,239.10 : 43,110.72 = 17,811.63 : x
2. Step 2: Convert to fraction form
   31,239.10/43,110.72 = 17,811.63/x
3. Step 3: Cross multiply
   31,239.10x = 43,110.72 × 17,811.63
4. Step 4: Simplify right side
   31,239.10x = 767,871,978.12
5. Step 5: Solve for x
   x = 767,871,978.12/31,239.10
6. Step 6: Final answer
   x = 24,580.48