Finding the Fourth Proportional to 73,618.72, 110,425.83 and 21,028.30

Step by Step Solution

1. Step 1: Write the proportion equation
   73,618.72 : 110,425.83 = 21,028.30 : x
2. Step 2: Convert to fraction form
   73,618.72/110,425.83 = 21,028.30/x
3. Step 3: Cross multiply
   73,618.72x = 110,425.83 × 21,028.30
4. Step 4: Simplify right side
   73,618.72x = 2,322,067,480.99
5. Step 5: Solve for x
   x = 2,322,067,480.99/73,618.72
6. Step 6: Final answer
   x = 31,541.81