Finding the Fourth Proportional to 64,950.50, 89,631.69 and 35,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,950.50 : 89,631.69 = 35,142.50 : x
2. Step 2: Convert to fraction form
   64,950.50/89,631.69 = 35,142.50/x
3. Step 3: Cross multiply
   64,950.50x = 89,631.69 × 35,142.50
4. Step 4: Simplify right side
   64,950.50x = 3,149,881,665.83
5. Step 5: Solve for x
   x = 3,149,881,665.83/64,950.50
6. Step 6: Final answer
   x = 48,496.65