Finding the Fourth Proportional to 90,201.97, 135,300.16 and 42,851.15

Step by Step Solution

1. Step 1: Write the proportion equation
   90,201.97 : 135,300.16 = 42,851.15 : x
2. Step 2: Convert to fraction form
   90,201.97/135,300.16 = 42,851.15/x
3. Step 3: Cross multiply
   90,201.97x = 135,300.16 × 42,851.15
4. Step 4: Simplify right side
   90,201.97x = 5,797,766,560.43
5. Step 5: Solve for x
   x = 5,797,766,560.43/90,201.97
6. Step 6: Final answer
   x = 64,275.39