Finding the Fourth Proportional to 31,388.49, 43,323.59 and 17,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,388.49 : 43,323.59 = 17,967.50 : x
2. Step 2: Convert to fraction form
   31,388.49/43,323.59 = 17,967.50/x
3. Step 3: Cross multiply
   31,388.49x = 43,323.59 × 17,967.50
4. Step 4: Simplify right side
   31,388.49x = 778,416,603.33
5. Step 5: Solve for x
   x = 778,416,603.33/31,388.49
6. Step 6: Final answer
   x = 24,799.43