Finding the Fourth Proportional to 80,020.72, 110,393.71 and 46,021.78

Step by Step Solution

1. Step 1: Write the proportion equation
   80,020.72 : 110,393.71 = 46,021.78 : x
2. Step 2: Convert to fraction form
   80,020.72/110,393.71 = 46,021.78/x
3. Step 3: Cross multiply
   80,020.72x = 110,393.71 × 46,021.78
4. Step 4: Simplify right side
   80,020.72x = 5,080,515,035.00
5. Step 5: Solve for x
   x = 5,080,515,035.00/80,020.72
6. Step 6: Final answer
   x = 63,489.99