Finding the Fourth Proportional to 33,185.31, 49,749.34 and 15,642.87

Step by Step Solution

1. Step 1: Write the proportion equation
   33,185.31 : 49,749.34 = 15,642.87 : x
2. Step 2: Convert to fraction form
   33,185.31/49,749.34 = 15,642.87/x
3. Step 3: Cross multiply
   33,185.31x = 49,749.34 × 15,642.87
4. Step 4: Simplify right side
   33,185.31x = 778,222,458.21
5. Step 5: Solve for x
   x = 778,222,458.21/33,185.31
6. Step 6: Final answer
   x = 23,450.81