Finding the Fourth Proportional to 64,950.31, 89,621.81 and 39,443.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,950.31 : 89,621.81 = 39,443.38 : x
2. Step 2: Convert to fraction form
   64,950.31/89,621.81 = 39,443.38/x
3. Step 3: Cross multiply
   64,950.31x = 89,621.81 × 39,443.38
4. Step 4: Simplify right side
   64,950.31x = 3,534,986,834.76
5. Step 5: Solve for x
   x = 3,534,986,834.76/64,950.31
6. Step 6: Final answer
   x = 54,426.02