Finding the Fourth Proportional to 31,389.32, 43,317.23 and 17,243.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,389.32 : 43,317.23 = 17,243.07 : x
2. Step 2: Convert to fraction form
   31,389.32/43,317.23 = 17,243.07/x
3. Step 3: Cross multiply
   31,389.32x = 43,317.23 × 17,243.07
4. Step 4: Simplify right side
   31,389.32x = 746,921,942.88
5. Step 5: Solve for x
   x = 746,921,942.88/31,389.32
6. Step 6: Final answer
   x = 23,795.42