Finding the Fourth Proportional to 55,621.98, 83,462.94 and 40,426.20

Step by Step Solution

1. Step 1: Write the proportion equation
   55,621.98 : 83,462.94 = 40,426.20 : x
2. Step 2: Convert to fraction form
   55,621.98/83,462.94 = 40,426.20/x
3. Step 3: Cross multiply
   55,621.98x = 83,462.94 × 40,426.20
4. Step 4: Simplify right side
   55,621.98x = 3,374,089,505.03
5. Step 5: Solve for x
   x = 3,374,089,505.03/55,621.98
6. Step 6: Final answer
   x = 60,661.08