Finding the Fourth Proportional to 72,071.92, 99,458.32 and 40,241.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,071.92 : 99,458.32 = 40,241.36 : x
2. Step 2: Convert to fraction form
   72,071.92/99,458.32 = 40,241.36/x
3. Step 3: Cross multiply
   72,071.92x = 99,458.32 × 40,241.36
4. Step 4: Simplify right side
   72,071.92x = 4,002,338,060.12
5. Step 5: Solve for x
   x = 4,002,338,060.12/72,071.92
6. Step 6: Final answer
   x = 55,532.56