Finding the Fourth Proportional to 31,305.60, 42,944.46 and 29,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,305.60 : 42,944.46 = 29,610.72 : x
2. Step 2: Convert to fraction form
   31,305.60/42,944.46 = 29,610.72/x
3. Step 3: Cross multiply
   31,305.60x = 42,944.46 × 29,610.72
4. Step 4: Simplify right side
   31,305.60x = 1,271,616,380.61
5. Step 5: Solve for x
   x = 1,271,616,380.61/31,305.60
6. Step 6: Final answer
   x = 40,619.45