Finding the Fourth Proportional to 61,936.72, 85,472.70 and 33,643

Step by Step Solution

1. Step 1: Write the proportion equation
   61,936.72 : 85,472.70 = 33,643 : x
2. Step 2: Convert to fraction form
   61,936.72/85,472.70 = 33,643/x
3. Step 3: Cross multiply
   61,936.72x = 85,472.70 × 33,643
4. Step 4: Simplify right side
   61,936.72x = 2,875,558,046.10
5. Step 5: Solve for x
   x = 2,875,558,046.10/61,936.72
6. Step 6: Final answer
   x = 46,427.35