Finding the Fourth Proportional to 82,572.80, 113,907.84 and 52,307.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82,572.80 : 113,907.84 = 52,307.20 : x
2. Step 2: Convert to fraction form
   82,572.80/113,907.84 = 52,307.20/x
3. Step 3: Cross multiply
   82,572.80x = 113,907.84 × 52,307.20
4. Step 4: Simplify right side
   82,572.80x = 5,958,200,168.45
5. Step 5: Solve for x
   x = 5,958,200,168.45/82,572.80
6. Step 6: Final answer
   x = 72,156.94