Finding the Fourth Proportional to 31,015.68, 42,814.72 and 22,064.64

Step by Step Solution

1. Step 1: Write the proportion equation
   31,015.68 : 42,814.72 = 22,064.64 : x
2. Step 2: Convert to fraction form
   31,015.68/42,814.72 = 22,064.64/x
3. Step 3: Cross multiply
   31,015.68x = 42,814.72 × 22,064.64
4. Step 4: Simplify right side
   31,015.68x = 944,691,383.50
5. Step 5: Solve for x
   x = 944,691,383.50/31,015.68
6. Step 6: Final answer
   x = 30,458.51