Finding the Fourth Proportional to 52,789.42, 72,850.53 and 28,917.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,789.42 : 72,850.53 = 28,917.10 : x
2. Step 2: Convert to fraction form
   52,789.42/72,850.53 = 28,917.10/x
3. Step 3: Cross multiply
   52,789.42x = 72,850.53 × 28,917.10
4. Step 4: Simplify right side
   52,789.42x = 2,106,626,061.06
5. Step 5: Solve for x
   x = 2,106,626,061.06/52,789.42
6. Step 6: Final answer
   x = 39,906.22