Finding the Fourth Proportional to 71,592.89, 98,795.40 and 39,763.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,592.89 : 98,795.40 = 39,763.80 : x
2. Step 2: Convert to fraction form
   71,592.89/98,795.40 = 39,763.80/x
3. Step 3: Cross multiply
   71,592.89x = 98,795.40 × 39,763.80
4. Step 4: Simplify right side
   71,592.89x = 3,928,480,526.52
5. Step 5: Solve for x
   x = 3,928,480,526.52/71,592.89
6. Step 6: Final answer
   x = 54,872.50