Finding the Fourth Proportional to 49,640.50, 74,103.35 and 42,544

Step by Step Solution

1. Step 1: Write the proportion equation
   49,640.50 : 74,103.35 = 42,544 : x
2. Step 2: Convert to fraction form
   49,640.50/74,103.35 = 42,544/x
3. Step 3: Cross multiply
   49,640.50x = 74,103.35 × 42,544
4. Step 4: Simplify right side
   49,640.50x = 3,152,652,922.40
5. Step 5: Solve for x
   x = 3,152,652,922.40/49,640.50
6. Step 6: Final answer
   x = 63,509.69