Finding the Fourth Proportional to 66,086.82, 91,200.06 and 35,872.20

Step by Step Solution

1. Step 1: Write the proportion equation
   66,086.82 : 91,200.06 = 35,872.20 : x
2. Step 2: Convert to fraction form
   66,086.82/91,200.06 = 35,872.20/x
3. Step 3: Cross multiply
   66,086.82x = 91,200.06 × 35,872.20
4. Step 4: Simplify right side
   66,086.82x = 3,271,546,792.33
5. Step 5: Solve for x
   x = 3,271,546,792.33/66,086.82
6. Step 6: Final answer
   x = 49,503.77