Finding the Fourth Proportional to 52,308.50, 72,185.94 and 28,435.28

Step by Step Solution

1. Step 1: Write the proportion equation
   52,308.50 : 72,185.94 = 28,435.28 : x
2. Step 2: Convert to fraction form
   52,308.50/72,185.94 = 28,435.28/x
3. Step 3: Cross multiply
   52,308.50x = 72,185.94 × 28,435.28
4. Step 4: Simplify right side
   52,308.50x = 2,052,627,055.03
5. Step 5: Solve for x
   x = 2,052,627,055.03/52,308.50
6. Step 6: Final answer
   x = 39,240.80