Finding the Fourth Proportional to 72,443.88, 99,976.74 and 54,506.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,443.88 : 99,976.74 = 54,506.92 : x
2. Step 2: Convert to fraction form
   72,443.88/99,976.74 = 54,506.92/x
3. Step 3: Cross multiply
   72,443.88x = 99,976.74 × 54,506.92
4. Step 4: Simplify right side
   72,443.88x = 5,449,424,169.04
5. Step 5: Solve for x
   x = 5,449,424,169.04/72,443.88
6. Step 6: Final answer
   x = 75,222.70