Finding the Fourth Proportional to 90,202.09, 135,300.34 and 42,851.26

Step by Step Solution

1. Step 1: Write the proportion equation
   90,202.09 : 135,300.34 = 42,851.26 : x
2. Step 2: Convert to fraction form
   90,202.09/135,300.34 = 42,851.26/x
3. Step 3: Cross multiply
   90,202.09x = 135,300.34 × 42,851.26
4. Step 4: Simplify right side
   90,202.09x = 5,797,790,047.43
5. Step 5: Solve for x
   x = 5,797,790,047.43/90,202.09
6. Step 6: Final answer
   x = 64,275.56