Finding the Fourth Proportional to 31,862.72, 43,970.76 and 17,715.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,862.72 : 43,970.76 = 17,715.68 : x
2. Step 2: Convert to fraction form
   31,862.72/43,970.76 = 17,715.68/x
3. Step 3: Cross multiply
   31,862.72x = 43,970.76 × 17,715.68
4. Step 4: Simplify right side
   31,862.72x = 778,971,913.52
5. Step 5: Solve for x
   x = 778,971,913.52/31,862.72
6. Step 6: Final answer
   x = 24,447.75