Finding the Fourth Proportional to 31,262.68, 43,142.56 and 17,115.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,262.68 : 43,142.56 = 17,115.56 : x
2. Step 2: Convert to fraction form
   31,262.68/43,142.56 = 17,115.56/x
3. Step 3: Cross multiply
   31,262.68x = 43,142.56 × 17,115.56
4. Step 4: Simplify right side
   31,262.68x = 738,409,074.23
5. Step 5: Solve for x
   x = 738,409,074.23/31,262.68
6. Step 6: Final answer
   x = 23,619.51