Finding the Fourth Proportional to 39,974.42, 55,161.86 and 22,065.60

Step by Step Solution

1. Step 1: Write the proportion equation
   39,974.42 : 55,161.86 = 22,065.60 : x
2. Step 2: Convert to fraction form
   39,974.42/55,161.86 = 22,065.60/x
3. Step 3: Cross multiply
   39,974.42x = 55,161.86 × 22,065.60
4. Step 4: Simplify right side
   39,974.42x = 1,217,179,538.02
5. Step 5: Solve for x
   x = 1,217,179,538.02/39,974.42
6. Step 6: Final answer
   x = 30,448.96