Finding the Fourth Proportional to 80,911.58, 111,659.92 and 45,100.67

Step by Step Solution

1. Step 1: Write the proportion equation
   80,911.58 : 111,659.92 = 45,100.67 : x
2. Step 2: Convert to fraction form
   80,911.58/111,659.92 = 45,100.67/x
3. Step 3: Cross multiply
   80,911.58x = 111,659.92 × 45,100.67
4. Step 4: Simplify right side
   80,911.58x = 5,035,936,533.10
5. Step 5: Solve for x
   x = 5,035,936,533.10/80,911.58
6. Step 6: Final answer
   x = 62,240.00