Finding the Fourth Proportional to 91,727.24, 137,612.52 and 28,544.40

Step by Step Solution

1. Step 1: Write the proportion equation
   91,727.24 : 137,612.52 = 28,544.40 : x
2. Step 2: Convert to fraction form
   91,727.24/137,612.52 = 28,544.40/x
3. Step 3: Cross multiply
   91,727.24x = 137,612.52 × 28,544.40
4. Step 4: Simplify right side
   91,727.24x = 3,928,066,815.89
5. Step 5: Solve for x
   x = 3,928,066,815.89/91,727.24
6. Step 6: Final answer
   x = 42,823.34