Finding the Fourth Proportional to 52,809.05, 72,875.36 and 28,935.23

Step by Step Solution

1. Step 1: Write the proportion equation
   52,809.05 : 72,875.36 = 28,935.23 : x
2. Step 2: Convert to fraction form
   52,809.05/72,875.36 = 28,935.23/x
3. Step 3: Cross multiply
   52,809.05x = 72,875.36 × 28,935.23
4. Step 4: Simplify right side
   52,809.05x = 2,108,665,010.89
5. Step 5: Solve for x
   x = 2,108,665,010.89/52,809.05
6. Step 6: Final answer
   x = 39,929.99