Finding the Fourth Proportional to 72,071.15, 99,458.37 and 40,241.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,071.15 : 99,458.37 = 40,241.18 : x
2. Step 2: Convert to fraction form
   72,071.15/99,458.37 = 40,241.18/x
3. Step 3: Cross multiply
   72,071.15x = 99,458.37 × 40,241.18
4. Step 4: Simplify right side
   72,071.15x = 4,002,321,672.38
5. Step 5: Solve for x
   x = 4,002,321,672.38/72,071.15
6. Step 6: Final answer
   x = 55,532.93