Finding the Fourth Proportional to 31,779.24, 43,855.23 and 17,439.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,779.24 : 43,855.23 = 17,439.31 : x
2. Step 2: Convert to fraction form
   31,779.24/43,855.23 = 17,439.31/x
3. Step 3: Cross multiply
   31,779.24x = 43,855.23 × 17,439.31
4. Step 4: Simplify right side
   31,779.24x = 764,804,940.51
5. Step 5: Solve for x
   x = 764,804,940.51/31,779.24
6. Step 6: Final answer
   x = 24,066.18