Finding the Fourth Proportional to 80,921.94, 111,669.98 and 45,111.21

Step by Step Solution

1. Step 1: Write the proportion equation
   80,921.94 : 111,669.98 = 45,111.21 : x
2. Step 2: Convert to fraction form
   80,921.94/111,669.98 = 45,111.21/x
3. Step 3: Cross multiply
   80,921.94x = 111,669.98 × 45,111.21
4. Step 4: Simplify right side
   80,921.94x = 5,037,567,692.92
5. Step 5: Solve for x
   x = 5,037,567,692.92/80,921.94
6. Step 6: Final answer
   x = 62,252.19