Finding the Fourth Proportional to 33,231, 45,858.15 and 18,123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   33,231 : 45,858.15 = 18,123.78 : x
2. Step 2: Convert to fraction form
   33,231/45,858.15 = 18,123.78/x
3. Step 3: Cross multiply
   33,231x = 45,858.15 × 18,123.78
4. Step 4: Simplify right side
   33,231x = 831,123,021.81
5. Step 5: Solve for x
   x = 831,123,021.81/33,231
6. Step 6: Final answer
   x = 25,010.47