Finding the Fourth Proportional to 31,268.34, 43,150.78 and 17,122.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,268.34 : 43,150.78 = 17,122.50 : x
2. Step 2: Convert to fraction form
   31,268.34/43,150.78 = 17,122.50/x
3. Step 3: Cross multiply
   31,268.34x = 43,150.78 × 17,122.50
4. Step 4: Simplify right side
   31,268.34x = 738,849,014.80
5. Step 5: Solve for x
   x = 738,849,014.80/31,268.34
6. Step 6: Final answer
   x = 23,629.30