Finding the Fourth Proportional to 61,933.72, 85,468.56 and 33,640

Step by Step Solution

1. Step 1: Write the proportion equation
   61,933.72 : 85,468.56 = 33,640 : x
2. Step 2: Convert to fraction form
   61,933.72/85,468.56 = 33,640/x
3. Step 3: Cross multiply
   61,933.72x = 85,468.56 × 33,640
4. Step 4: Simplify right side
   61,933.72x = 2,875,162,358.40
5. Step 5: Solve for x
   x = 2,875,162,358.40/61,933.72
6. Step 6: Final answer
   x = 46,423.21