Finding the Fourth Proportional to 39,920.33, 55,076.35 and 25,591.73

Step by Step Solution

1. Step 1: Write the proportion equation
   39,920.33 : 55,076.35 = 25,591.73 : x
2. Step 2: Convert to fraction form
   39,920.33/55,076.35 = 25,591.73/x
3. Step 3: Cross multiply
   39,920.33x = 55,076.35 × 25,591.73
4. Step 4: Simplify right side
   39,920.33x = 1,409,499,152.30
5. Step 5: Solve for x
   x = 1,409,499,152.30/39,920.33
6. Step 6: Final answer
   x = 35,307.81