Finding the Fourth Proportional to 52,308.12, 72,186.63 and 28,436.43

Step by Step Solution

1. Step 1: Write the proportion equation
   52,308.12 : 72,186.63 = 28,436.43 : x
2. Step 2: Convert to fraction form
   52,308.12/72,186.63 = 28,436.43/x
3. Step 3: Cross multiply
   52,308.12x = 72,186.63 × 28,436.43
4. Step 4: Simplify right side
   52,308.12x = 2,052,730,050.93
5. Step 5: Solve for x
   x = 2,052,730,050.93/52,308.12
6. Step 6: Final answer
   x = 39,243.05