Finding the Fourth Proportional to 50,790, 70,090.56 and 28,434

Step by Step Solution

1. Step 1: Write the proportion equation
   50,790 : 70,090.56 = 28,434 : x
2. Step 2: Convert to fraction form
   50,790/70,090.56 = 28,434/x
3. Step 3: Cross multiply
   50,790x = 70,090.56 × 28,434
4. Step 4: Simplify right side
   50,790x = 1,992,954,983.04
5. Step 5: Solve for x
   x = 1,992,954,983.04/50,790
6. Step 6: Final answer
   x = 39,239.12