Finding the Fourth Proportional to 101,426.54, 139,964.52 and 55,485.44

Step by Step Solution

1. Step 1: Write the proportion equation
   101,426.54 : 139,964.52 = 55,485.44 : x
2. Step 2: Convert to fraction form
   101,426.54/139,964.52 = 55,485.44/x
3. Step 3: Cross multiply
   101,426.54x = 139,964.52 × 55,485.44
4. Step 4: Simplify right side
   101,426.54x = 7,765,992,976.59
5. Step 5: Solve for x
   x = 7,765,992,976.59/101,426.54
6. Step 6: Final answer
   x = 76,567.66