Finding the Fourth Proportional to 80,921.76, 111,725.76 and 52,254.24

Step by Step Solution

1. Step 1: Write the proportion equation
   80,921.76 : 111,725.76 = 52,254.24 : x
2. Step 2: Convert to fraction form
   80,921.76/111,725.76 = 52,254.24/x
3. Step 3: Cross multiply
   80,921.76x = 111,725.76 × 52,254.24
4. Step 4: Simplify right side
   80,921.76x = 5,838,144,677.22
5. Step 5: Solve for x
   x = 5,838,144,677.22/80,921.76
6. Step 6: Final answer
   x = 72,145.55