Finding the Fourth Proportional to 56,912.88, 85,300.20 and 40,277.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,912.88 : 85,300.20 = 40,277.82 : x
2. Step 2: Convert to fraction form
   56,912.88/85,300.20 = 40,277.82/x
3. Step 3: Cross multiply
   56,912.88x = 85,300.20 × 40,277.82
4. Step 4: Simplify right side
   56,912.88x = 3,435,706,101.56
5. Step 5: Solve for x
   x = 3,435,706,101.56/56,912.88
6. Step 6: Final answer
   x = 60,367.81