Finding the Fourth Proportional to 53,868.73, 80,796.91 and 20,588.06

Step by Step Solution

1. Step 1: Write the proportion equation
   53,868.73 : 80,796.91 = 20,588.06 : x
2. Step 2: Convert to fraction form
   53,868.73/80,796.91 = 20,588.06/x
3. Step 3: Cross multiply
   53,868.73x = 80,796.91 × 20,588.06
4. Step 4: Simplify right side
   53,868.73x = 1,663,451,630.89
5. Step 5: Solve for x
   x = 1,663,451,630.89/53,868.73
6. Step 6: Final answer
   x = 30,879.73