Finding the Fourth Proportional to 49,992.76, 69,005.37 and 28,786.15

Step by Step Solution

1. Step 1: Write the proportion equation
   49,992.76 : 69,005.37 = 28,786.15 : x
2. Step 2: Convert to fraction form
   49,992.76/69,005.37 = 28,786.15/x
3. Step 3: Cross multiply
   49,992.76x = 69,005.37 × 28,786.15
4. Step 4: Simplify right side
   49,992.76x = 1,986,398,931.63
5. Step 5: Solve for x
   x = 1,986,398,931.63/49,992.76
6. Step 6: Final answer
   x = 39,733.73