Finding the Fourth Proportional to 72,278.22, 99,724.98 and 41,643.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,278.22 : 99,724.98 = 41,643.81 : x
2. Step 2: Convert to fraction form
   72,278.22/99,724.98 = 41,643.81/x
3. Step 3: Cross multiply
   72,278.22x = 99,724.98 × 41,643.81
4. Step 4: Simplify right side
   72,278.22x = 4,152,928,119.37
5. Step 5: Solve for x
   x = 4,152,928,119.37/72,278.22
6. Step 6: Final answer
   x = 57,457.53