Finding the Fourth Proportional to 72,408.46, 99,922.70 and 40,577.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,408.46 : 99,922.70 = 40,577.98 : x
2. Step 2: Convert to fraction form
   72,408.46/99,922.70 = 40,577.98/x
3. Step 3: Cross multiply
   72,408.46x = 99,922.70 × 40,577.98
4. Step 4: Simplify right side
   72,408.46x = 4,054,661,322.15
5. Step 5: Solve for x
   x = 4,054,661,322.15/72,408.46
6. Step 6: Final answer
   x = 55,997.07