Finding the Fourth Proportional to 52,229.06, 72,075.69 and 28,355.25

Step by Step Solution

1. Step 1: Write the proportion equation
   52,229.06 : 72,075.69 = 28,355.25 : x
2. Step 2: Convert to fraction form
   52,229.06/72,075.69 = 28,355.25/x
3. Step 3: Cross multiply
   52,229.06x = 72,075.69 × 28,355.25
4. Step 4: Simplify right side
   52,229.06x = 2,043,724,208.87
5. Step 5: Solve for x
   x = 2,043,724,208.87/52,229.06
6. Step 6: Final answer
   x = 39,130.02