Finding the Fourth Proportional to 33,099.48, 45,672.20 and 19,665.78

Step by Step Solution

1. Step 1: Write the proportion equation
   33,099.48 : 45,672.20 = 19,665.78 : x
2. Step 2: Convert to fraction form
   33,099.48/45,672.20 = 19,665.78/x
3. Step 3: Cross multiply
   33,099.48x = 45,672.20 × 19,665.78
4. Step 4: Simplify right side
   33,099.48x = 898,179,437.32
5. Step 5: Solve for x
   x = 898,179,437.32/33,099.48
6. Step 6: Final answer
   x = 27,135.76