Finding the Fourth Proportional to 31,362.32, 43,278.71 and 17,215.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,362.32 : 43,278.71 = 17,215.47 : x
2. Step 2: Convert to fraction form
   31,362.32/43,278.71 = 17,215.47/x
3. Step 3: Cross multiply
   31,362.32x = 43,278.71 × 17,215.47
4. Step 4: Simplify right side
   31,362.32x = 745,063,247.57
5. Step 5: Solve for x
   x = 745,063,247.57/31,362.32
6. Step 6: Final answer
   x = 23,756.63