Finding the Fourth Proportional to 53,745.55, 80,650.72 and 18,709.81

Step by Step Solution

1. Step 1: Write the proportion equation
   53,745.55 : 80,650.72 = 18,709.81 : x
2. Step 2: Convert to fraction form
   53,745.55/80,650.72 = 18,709.81/x
3. Step 3: Cross multiply
   53,745.55x = 80,650.72 × 18,709.81
4. Step 4: Simplify right side
   53,745.55x = 1,508,959,647.56
5. Step 5: Solve for x
   x = 1,508,959,647.56/53,745.55
6. Step 6: Final answer
   x = 28,075.99