Finding the Fourth Proportional to 31,439.33, 43,385.63 and 17,099.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,439.33 : 43,385.63 = 17,099.43 : x
2. Step 2: Convert to fraction form
   31,439.33/43,385.63 = 17,099.43/x
3. Step 3: Cross multiply
   31,439.33x = 43,385.63 × 17,099.43
4. Step 4: Simplify right side
   31,439.33x = 741,869,457.69
5. Step 5: Solve for x
   x = 741,869,457.69/31,439.33
6. Step 6: Final answer
   x = 23,596.86