Finding the Fourth Proportional to 39,944.34, 55,083.78 and 30,988.56

Step by Step Solution

1. Step 1: Write the proportion equation
   39,944.34 : 55,083.78 = 30,988.56 : x
2. Step 2: Convert to fraction form
   39,944.34/55,083.78 = 30,988.56/x
3. Step 3: Cross multiply
   39,944.34x = 55,083.78 × 30,988.56
4. Step 4: Simplify right side
   39,944.34x = 1,706,967,021.56
5. Step 5: Solve for x
   x = 1,706,967,021.56/39,944.34
6. Step 6: Final answer
   x = 42,733.64