Finding the Fourth Proportional to 72,424.89, 99,938.22 and 40,589.19

Step by Step Solution

1. Step 1: Write the proportion equation
   72,424.89 : 99,938.22 = 40,589.19 : x
2. Step 2: Convert to fraction form
   72,424.89/99,938.22 = 40,589.19/x
3. Step 3: Cross multiply
   72,424.89x = 99,938.22 × 40,589.19
4. Step 4: Simplify right side
   72,424.89x = 4,056,411,399.84
5. Step 5: Solve for x
   x = 4,056,411,399.84/72,424.89
6. Step 6: Final answer
   x = 56,008.53