Finding the Fourth Proportional to 71,661, 98,892.33 and 39,837.45

Step by Step Solution

1. Step 1: Write the proportion equation
   71,661 : 98,892.33 = 39,837.45 : x
2. Step 2: Convert to fraction form
   71,661/98,892.33 = 39,837.45/x
3. Step 3: Cross multiply
   71,661x = 98,892.33 × 39,837.45
4. Step 4: Simplify right side
   71,661x = 3,939,618,251.76
5. Step 5: Solve for x
   x = 3,939,618,251.76/71,661
6. Step 6: Final answer
   x = 54,975.76