Finding the Fourth Proportional to 66,059.82, 91,128.65 and 41,819.67

Step by Step Solution

1. Step 1: Write the proportion equation
   66,059.82 : 91,128.65 = 41,819.67 : x
2. Step 2: Convert to fraction form
   66,059.82/91,128.65 = 41,819.67/x
3. Step 3: Cross multiply
   66,059.82x = 91,128.65 × 41,819.67
4. Step 4: Simplify right side
   66,059.82x = 3,810,969,861.45
5. Step 5: Solve for x
   x = 3,810,969,861.45/66,059.82
6. Step 6: Final answer
   x = 57,689.68