Finding the Fourth Proportional to 52,811.80, 72,881.98 and 28,940.00

Step by Step Solution

1. Step 1: Write the proportion equation
   52,811.80 : 72,881.98 = 28,940.00 : x
2. Step 2: Convert to fraction form
   52,811.80/72,881.98 = 28,940.00/x
3. Step 3: Cross multiply
   52,811.80x = 72,881.98 × 28,940.00
4. Step 4: Simplify right side
   52,811.80x = 2,109,204,064.44
5. Step 5: Solve for x
   x = 2,109,204,064.44/52,811.80
6. Step 6: Final answer
   x = 39,938.12