Finding the Fourth Proportional to 31,674.86, 43,715.94 and 18,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,674.86 : 43,715.94 = 18,243.50 : x
2. Step 2: Convert to fraction form
   31,674.86/43,715.94 = 18,243.50/x
3. Step 3: Cross multiply
   31,674.86x = 43,715.94 × 18,243.50
4. Step 4: Simplify right side
   31,674.86x = 797,531,751.39
5. Step 5: Solve for x
   x = 797,531,751.39/31,674.86
6. Step 6: Final answer
   x = 25,178.70