Finding the Fourth Proportional to 80,719.12, 111,360.18 and 52,035.40

Step by Step Solution

1. Step 1: Write the proportion equation
   80,719.12 : 111,360.18 = 52,035.40 : x
2. Step 2: Convert to fraction form
   80,719.12/111,360.18 = 52,035.40/x
3. Step 3: Cross multiply
   80,719.12x = 111,360.18 × 52,035.40
4. Step 4: Simplify right side
   80,719.12x = 5,794,671,510.37
5. Step 5: Solve for x
   x = 5,794,671,510.37/80,719.12
6. Step 6: Final answer
   x = 71,788.09