Finding the Fourth Proportional to 66,086.67, 91,199.69 and 35,872

Step by Step Solution

1. Step 1: Write the proportion equation
   66,086.67 : 91,199.69 = 35,872 : x
2. Step 2: Convert to fraction form
   66,086.67/91,199.69 = 35,872/x
3. Step 3: Cross multiply
   66,086.67x = 91,199.69 × 35,872
4. Step 4: Simplify right side
   66,086.67x = 3,271,515,279.68
5. Step 5: Solve for x
   x = 3,271,515,279.68/66,086.67
6. Step 6: Final answer
   x = 49,503.41