Finding the Fourth Proportional to 71,837.39, 99,133.98 and 40,009.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,837.39 : 99,133.98 = 40,009.25 : x
2. Step 2: Convert to fraction form
   71,837.39/99,133.98 = 40,009.25/x
3. Step 3: Cross multiply
   71,837.39x = 99,133.98 × 40,009.25
4. Step 4: Simplify right side
   71,837.39x = 3,966,275,693.65
5. Step 5: Solve for x
   x = 3,966,275,693.65/71,837.39
6. Step 6: Final answer
   x = 55,211.86