Finding the Fourth Proportional to 71,673.72, 98,886.62 and 39,836.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,673.72 : 98,886.62 = 39,836.48 : x
2. Step 2: Convert to fraction form
   71,673.72/98,886.62 = 39,836.48/x
3. Step 3: Cross multiply
   71,673.72x = 98,886.62 × 39,836.48
4. Step 4: Simplify right side
   71,673.72x = 3,939,294,166.28
5. Step 5: Solve for x
   x = 3,939,294,166.28/71,673.72
6. Step 6: Final answer
   x = 54,961.49