Finding the Fourth Proportional to 52,851.73, 72,935.49 and 28,978.81

Step by Step Solution

1. Step 1: Write the proportion equation
   52,851.73 : 72,935.49 = 28,978.81 : x
2. Step 2: Convert to fraction form
   52,851.73/72,935.49 = 28,978.81/x
3. Step 3: Cross multiply
   52,851.73x = 72,935.49 × 28,978.81
4. Step 4: Simplify right side
   52,851.73x = 2,113,583,706.97
5. Step 5: Solve for x
   x = 2,113,583,706.97/52,851.73
6. Step 6: Final answer
   x = 39,990.81