Finding the Fourth Proportional to 39,947.58, 55,131.03 and 23,179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,947.58 : 55,131.03 = 23,179.50 : x
2. Step 2: Convert to fraction form
   39,947.58/55,131.03 = 23,179.50/x
3. Step 3: Cross multiply
   39,947.58x = 55,131.03 × 23,179.50
4. Step 4: Simplify right side
   39,947.58x = 1,277,909,709.89
5. Step 5: Solve for x
   x = 1,277,909,709.89/39,947.58
6. Step 6: Final answer
   x = 31,989.67