Finding the Fourth Proportional to 56,019.48, 77,200.55 and 40,076.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,019.48 : 77,200.55 = 40,076.25 : x
2. Step 2: Convert to fraction form
   56,019.48/77,200.55 = 40,076.25/x
3. Step 3: Cross multiply
   56,019.48x = 77,200.55 × 40,076.25
4. Step 4: Simplify right side
   56,019.48x = 3,093,907,955.55
5. Step 5: Solve for x
   x = 3,093,907,955.55/56,019.48
6. Step 6: Final answer
   x = 55,229.15