Finding the Fourth Proportional to 91,815.57, 137,744.63 and 28,632.33

Step by Step Solution

1. Step 1: Write the proportion equation
   91,815.57 : 137,744.63 = 28,632.33 : x
2. Step 2: Convert to fraction form
   91,815.57/137,744.63 = 28,632.33/x
3. Step 3: Cross multiply
   91,815.57x = 137,744.63 × 28,632.33
4. Step 4: Simplify right side
   91,815.57x = 3,943,949,558.73
5. Step 5: Solve for x
   x = 3,943,949,558.73/91,815.57
6. Step 6: Final answer
   x = 42,955.13