Finding the Fourth Proportional to 89,960.82, 135,028.70 and 43,246.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,960.82 : 135,028.70 = 43,246.50 : x
2. Step 2: Convert to fraction form
   89,960.82/135,028.70 = 43,246.50/x
3. Step 3: Cross multiply
   89,960.82x = 135,028.70 × 43,246.50
4. Step 4: Simplify right side
   89,960.82x = 5,839,518,674.55
5. Step 5: Solve for x
   x = 5,839,518,674.55/89,960.82
6. Step 6: Final answer
   x = 64,911.80