Finding the Fourth Proportional to 39,665.08, 54,742.65 and 22,665.42

Step by Step Solution

1. Step 1: Write the proportion equation
   39,665.08 : 54,742.65 = 22,665.42 : x
2. Step 2: Convert to fraction form
   39,665.08/54,742.65 = 22,665.42/x
3. Step 3: Cross multiply
   39,665.08x = 54,742.65 × 22,665.42
4. Step 4: Simplify right side
   39,665.08x = 1,240,765,196.66
5. Step 5: Solve for x
   x = 1,240,765,196.66/39,665.08
6. Step 6: Final answer
   x = 31,281.05