Finding the Fourth Proportional to 72,392.52, 99,894.43 and 40,555.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,392.52 : 99,894.43 = 40,555.27 : x
2. Step 2: Convert to fraction form
   72,392.52/99,894.43 = 40,555.27/x
3. Step 3: Cross multiply
   72,392.52x = 99,894.43 × 40,555.27
4. Step 4: Simplify right side
   72,392.52x = 4,051,245,580.15
5. Step 5: Solve for x
   x = 4,051,245,580.15/72,392.52
6. Step 6: Final answer
   x = 55,962.21