Finding the Fourth Proportional to 66,086.94, 91,200.05 and 35,872.25

Step by Step Solution

1. Step 1: Write the proportion equation
   66,086.94 : 91,200.05 = 35,872.25 : x
2. Step 2: Convert to fraction form
   66,086.94/91,200.05 = 35,872.25/x
3. Step 3: Cross multiply
   66,086.94x = 91,200.05 × 35,872.25
4. Step 4: Simplify right side
   66,086.94x = 3,271,551,042.25
5. Step 5: Solve for x
   x = 3,271,551,042.25/66,086.94
6. Step 6: Final answer
   x = 49,503.75