Finding the Fourth Proportional to 55,435.48, 83,101.38 and 20,365.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,435.48 : 83,101.38 = 20,365.72 : x
2. Step 2: Convert to fraction form
   55,435.48/83,101.38 = 20,365.72/x
3. Step 3: Cross multiply
   55,435.48x = 83,101.38 × 20,365.72
4. Step 4: Simplify right side
   55,435.48x = 1,692,419,436.69
5. Step 5: Solve for x
   x = 1,692,419,436.69/55,435.48
6. Step 6: Final answer
   x = 30,529.54