Finding the Fourth Proportional to 91,087.04, 136,637.04 and 28,757

Step by Step Solution

1. Step 1: Write the proportion equation
   91,087.04 : 136,637.04 = 28,757 : x
2. Step 2: Convert to fraction form
   91,087.04/136,637.04 = 28,757/x
3. Step 3: Cross multiply
   91,087.04x = 136,637.04 × 28,757
4. Step 4: Simplify right side
   91,087.04x = 3,929,271,359.28
5. Step 5: Solve for x
   x = 3,929,271,359.28/91,087.04
6. Step 6: Final answer
   x = 43,137.55