Finding the Fourth Proportional to 52,851.87, 72,935.03 and 28,978.49

Step by Step Solution

1. Step 1: Write the proportion equation
   52,851.87 : 72,935.03 = 28,978.49 : x
2. Step 2: Convert to fraction form
   52,851.87/72,935.03 = 28,978.49/x
3. Step 3: Cross multiply
   52,851.87x = 72,935.03 × 28,978.49
4. Step 4: Simplify right side
   52,851.87x = 2,113,546,527.94
5. Step 5: Solve for x
   x = 2,113,546,527.94/52,851.87
6. Step 6: Final answer
   x = 39,990.00