Finding the Fourth Proportional to 80,918.36, 111,667.35 and 45,107.60

Step by Step Solution

1. Step 1: Write the proportion equation
   80,918.36 : 111,667.35 = 45,107.60 : x
2. Step 2: Convert to fraction form
   80,918.36/111,667.35 = 45,107.60/x
3. Step 3: Cross multiply
   80,918.36x = 111,667.35 × 45,107.60
4. Step 4: Simplify right side
   80,918.36x = 5,037,045,598.52
5. Step 5: Solve for x
   x = 5,037,045,598.52/80,918.36
6. Step 6: Final answer
   x = 62,248.49