Finding the Fourth Proportional to 52,435.14, 72,359.89 and 28,561.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,435.14 : 72,359.89 = 28,561.80 : x
2. Step 2: Convert to fraction form
   52,435.14/72,359.89 = 28,561.80/x
3. Step 3: Cross multiply
   52,435.14x = 72,359.89 × 28,561.80
4. Step 4: Simplify right side
   52,435.14x = 2,066,728,706.20
5. Step 5: Solve for x
   x = 2,066,728,706.20/52,435.14
6. Step 6: Final answer
   x = 39,414.96