Finding the Fourth Proportional to 31,361.16, 43,278.96 and 17,215.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,361.16 : 43,278.96 = 17,215.32 : x
2. Step 2: Convert to fraction form
   31,361.16/43,278.96 = 17,215.32/x
3. Step 3: Cross multiply
   31,361.16x = 43,278.96 × 17,215.32
4. Step 4: Simplify right side
   31,361.16x = 745,061,145.67
5. Step 5: Solve for x
   x = 745,061,145.67/31,361.16
6. Step 6: Final answer
   x = 23,757.45