Finding the Fourth Proportional to 67,940.30, 101,452.96 and 55,485.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67,940.30 : 101,452.96 = 55,485.05 : x
2. Step 2: Convert to fraction form
   67,940.30/101,452.96 = 55,485.05/x
3. Step 3: Cross multiply
   67,940.30x = 101,452.96 × 55,485.05
4. Step 4: Simplify right side
   67,940.30x = 5,629,122,558.25
5. Step 5: Solve for x
   x = 5,629,122,558.25/67,940.30
6. Step 6: Final answer
   x = 82,853.95