Finding the Fourth Proportional to 31,389.42, 43,319.52 and 17,242.41

Step by Step Solution

1. Step 1: Write the proportion equation
   31,389.42 : 43,319.52 = 17,242.41 : x
2. Step 2: Convert to fraction form
   31,389.42/43,319.52 = 17,242.41/x
3. Step 3: Cross multiply
   31,389.42x = 43,319.52 × 17,242.41
4. Step 4: Simplify right side
   31,389.42x = 746,932,924.84
5. Step 5: Solve for x
   x = 746,932,924.84/31,389.42
6. Step 6: Final answer
   x = 23,795.69