Finding the Fourth Proportional to 72,975.98, 100,706.80 and 39,441.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,975.98 : 100,706.80 = 39,441.98 : x
2. Step 2: Convert to fraction form
   72,975.98/100,706.80 = 39,441.98/x
3. Step 3: Cross multiply
   72,975.98x = 100,706.80 × 39,441.98
4. Step 4: Simplify right side
   72,975.98x = 3,972,074,890.72
5. Step 5: Solve for x
   x = 3,972,074,890.72/72,975.98
6. Step 6: Final answer
   x = 54,429.90