Finding the Fourth Proportional to 73,111.33, 109,644.67 and 30,990.63

Step by Step Solution

1. Step 1: Write the proportion equation
   73,111.33 : 109,644.67 = 30,990.63 : x
2. Step 2: Convert to fraction form
   73,111.33/109,644.67 = 30,990.63/x
3. Step 3: Cross multiply
   73,111.33x = 109,644.67 × 30,990.63
4. Step 4: Simplify right side
   73,111.33x = 3,397,957,399.44
5. Step 5: Solve for x
   x = 3,397,957,399.44/73,111.33
6. Step 6: Final answer
   x = 46,476.48