Finding the Fourth Proportional to 72,379.50, 99,883.71 and 40,548.39

Step by Step Solution

1. Step 1: Write the proportion equation
   72,379.50 : 99,883.71 = 40,548.39 : x
2. Step 2: Convert to fraction form
   72,379.50/99,883.71 = 40,548.39/x
3. Step 3: Cross multiply
   72,379.50x = 99,883.71 × 40,548.39
4. Step 4: Simplify right side
   72,379.50x = 4,050,123,627.73
5. Step 5: Solve for x
   x = 4,050,123,627.73/72,379.50
6. Step 6: Final answer
   x = 55,956.78