Finding the Fourth Proportional to 31,789.96, 43,869.72 and 17,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,789.96 : 43,869.72 = 17,642.50 : x
2. Step 2: Convert to fraction form
   31,789.96/43,869.72 = 17,642.50/x
3. Step 3: Cross multiply
   31,789.96x = 43,869.72 × 17,642.50
4. Step 4: Simplify right side
   31,789.96x = 773,971,535.10
5. Step 5: Solve for x
   x = 773,971,535.10/31,789.96
6. Step 6: Final answer
   x = 24,346.41