Finding the Fourth Proportional to 31,483.90, 43,447.71 and 17,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,483.90 : 43,447.71 = 17,143.50 : x
2. Step 2: Convert to fraction form
   31,483.90/43,447.71 = 17,143.50/x
3. Step 3: Cross multiply
   31,483.90x = 43,447.71 × 17,143.50
4. Step 4: Simplify right side
   31,483.90x = 744,845,816.39
5. Step 5: Solve for x
   x = 744,845,816.39/31,483.90
6. Step 6: Final answer
   x = 23,657.99