Finding the Fourth Proportional to 71,610.57, 98,824.46 and 39,782.43

Step by Step Solution

1. Step 1: Write the proportion equation
   71,610.57 : 98,824.46 = 39,782.43 : x
2. Step 2: Convert to fraction form
   71,610.57/98,824.46 = 39,782.43/x
3. Step 3: Cross multiply
   71,610.57x = 98,824.46 × 39,782.43
4. Step 4: Simplify right side
   71,610.57x = 3,931,476,963.33
5. Step 5: Solve for x
   x = 3,931,476,963.33/71,610.57
6. Step 6: Final answer
   x = 54,900.79