Finding the Fourth Proportional to 52,854.92, 72,939.81 and 28,981.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,854.92 : 72,939.81 = 28,981.10 : x
2. Step 2: Convert to fraction form
   52,854.92/72,939.81 = 28,981.10/x
3. Step 3: Cross multiply
   52,854.92x = 72,939.81 × 28,981.10
4. Step 4: Simplify right side
   52,854.92x = 2,113,875,927.59
5. Step 5: Solve for x
   x = 2,113,875,927.59/52,854.92
6. Step 6: Final answer
   x = 39,993.93