Finding the Fourth Proportional to 71,665.60, 98,898.42 and 39,837.46

Step by Step Solution

1. Step 1: Write the proportion equation
   71,665.60 : 98,898.42 = 39,837.46 : x
2. Step 2: Convert to fraction form
   71,665.60/98,898.42 = 39,837.46/x
3. Step 3: Cross multiply
   71,665.60x = 98,898.42 × 39,837.46
4. Step 4: Simplify right side
   71,665.60x = 3,939,861,850.81
5. Step 5: Solve for x
   x = 3,939,861,850.81/71,665.60
6. Step 6: Final answer
   x = 54,975.63