Finding the Fourth Proportional to 80,784.80, 111,498.60 and 48,971.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,784.80 : 111,498.60 = 48,971.12 : x
2. Step 2: Convert to fraction form
   80,784.80/111,498.60 = 48,971.12/x
3. Step 3: Cross multiply
   80,784.80x = 111,498.60 × 48,971.12
4. Step 4: Simplify right side
   80,784.80x = 5,460,211,320.43
5. Step 5: Solve for x
   x = 5,460,211,320.43/80,784.80
6. Step 6: Final answer
   x = 67,589.59