Finding the Fourth Proportional to 72,458.82, 99,991.62 and 40,627.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72,458.82 : 99,991.62 = 40,627.02 : x
2. Step 2: Convert to fraction form
   72,458.82/99,991.62 = 40,627.02/x
3. Step 3: Cross multiply
   72,458.82x = 99,991.62 × 40,627.02
4. Step 4: Simplify right side
   72,458.82x = 4,062,361,545.57
5. Step 5: Solve for x
   x = 4,062,361,545.57/72,458.82
6. Step 6: Final answer
   x = 56,064.42