Finding the Fourth Proportional to 57,218.78, 78,945.56 and 33,017.84

Step by Step Solution

1. Step 1: Write the proportion equation
   57,218.78 : 78,945.56 = 33,017.84 : x
2. Step 2: Convert to fraction form
   57,218.78/78,945.56 = 33,017.84/x
3. Step 3: Cross multiply
   57,218.78x = 78,945.56 × 33,017.84
4. Step 4: Simplify right side
   57,218.78x = 2,606,611,868.79
5. Step 5: Solve for x
   x = 2,606,611,868.79/57,218.78
6. Step 6: Final answer
   x = 45,555.18