Finding the Fourth Proportional to 57,100.71, 85,616.39 and 28,604.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,100.71 : 85,616.39 = 28,604.52 : x
2. Step 2: Convert to fraction form
   57,100.71/85,616.39 = 28,604.52/x
3. Step 3: Cross multiply
   57,100.71x = 85,616.39 × 28,604.52
4. Step 4: Simplify right side
   57,100.71x = 2,449,015,811.10
5. Step 5: Solve for x
   x = 2,449,015,811.10/57,100.71
6. Step 6: Final answer
   x = 42,889.41