Finding the Fourth Proportional to 31,311.28, 42,945.01 and 29,616.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,311.28 : 42,945.01 = 29,616.76 : x
2. Step 2: Convert to fraction form
   31,311.28/42,945.01 = 29,616.76/x
3. Step 3: Cross multiply
   31,311.28x = 42,945.01 × 29,616.76
4. Step 4: Simplify right side
   31,311.28x = 1,271,892,054.37
5. Step 5: Solve for x
   x = 1,271,892,054.37/31,311.28
6. Step 6: Final answer
   x = 40,620.89