Finding the Fourth Proportional to 57,121.82, 78,856.71 and 35,912.78

Step by Step Solution

1. Step 1: Write the proportion equation
   57,121.82 : 78,856.71 = 35,912.78 : x
2. Step 2: Convert to fraction form
   57,121.82/78,856.71 = 35,912.78/x
3. Step 3: Cross multiply
   57,121.82x = 78,856.71 × 35,912.78
4. Step 4: Simplify right side
   57,121.82x = 2,831,963,677.75
5. Step 5: Solve for x
   x = 2,831,963,677.75/57,121.82
6. Step 6: Final answer
   x = 49,577.62