Finding the Fourth Proportional to 72,987, 109,487.52 and 33,555.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,987 : 109,487.52 = 33,555.12 : x
2. Step 2: Convert to fraction form
   72,987/109,487.52 = 33,555.12/x
3. Step 3: Cross multiply
   72,987x = 109,487.52 × 33,555.12
4. Step 4: Simplify right side
   72,987x = 3,673,866,872.10
5. Step 5: Solve for x
   x = 3,673,866,872.10/72,987
6. Step 6: Final answer
   x = 50,335.91