Finding the Fourth Proportional to 31,172.95, 43,022.34 and 17,561.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,172.95 : 43,022.34 = 17,561.10 : x
2. Step 2: Convert to fraction form
   31,172.95/43,022.34 = 17,561.10/x
3. Step 3: Cross multiply
   31,172.95x = 43,022.34 × 17,561.10
4. Step 4: Simplify right side
   31,172.95x = 755,519,776.31
5. Step 5: Solve for x
   x = 755,519,776.31/31,172.95
6. Step 6: Final answer
   x = 24,236.39