Finding the Fourth Proportional to 31,149.94, 42,992.49 and 18,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,149.94 : 42,992.49 = 18,575.50 : x
2. Step 2: Convert to fraction form
   31,149.94/42,992.49 = 18,575.50/x
3. Step 3: Cross multiply
   31,149.94x = 42,992.49 × 18,575.50
4. Step 4: Simplify right side
   31,149.94x = 798,606,998.00
5. Step 5: Solve for x
   x = 798,606,998.00/31,149.94
6. Step 6: Final answer
   x = 25,637.51