Finding the Fourth Proportional to 91,742.73, 137,629.47 and 28,548

Step by Step Solution

1. Step 1: Write the proportion equation
   91,742.73 : 137,629.47 = 28,548 : x
2. Step 2: Convert to fraction form
   91,742.73/137,629.47 = 28,548/x
3. Step 3: Cross multiply
   91,742.73x = 137,629.47 × 28,548
4. Step 4: Simplify right side
   91,742.73x = 3,929,046,109.56
5. Step 5: Solve for x
   x = 3,929,046,109.56/91,742.73
6. Step 6: Final answer
   x = 42,826.78