Finding the Fourth Proportional to 80,111.83, 120,174.61 and 20,947.41

Step by Step Solution

1. Step 1: Write the proportion equation
   80,111.83 : 120,174.61 = 20,947.41 : x
2. Step 2: Convert to fraction form
   80,111.83/120,174.61 = 20,947.41/x
3. Step 3: Cross multiply
   80,111.83x = 120,174.61 × 20,947.41
4. Step 4: Simplify right side
   80,111.83x = 2,517,346,474.46
5. Step 5: Solve for x
   x = 2,517,346,474.46/80,111.83
6. Step 6: Final answer
   x = 31,422.90