Finding the Fourth Proportional to 71,192.24, 98,242.09 and 40,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,192.24 : 98,242.09 = 40,978.50 : x
2. Step 2: Convert to fraction form
   71,192.24/98,242.09 = 40,978.50/x
3. Step 3: Cross multiply
   71,192.24x = 98,242.09 × 40,978.50
4. Step 4: Simplify right side
   71,192.24x = 4,025,813,485.07
5. Step 5: Solve for x
   x = 4,025,813,485.07/71,192.24
6. Step 6: Final answer
   x = 56,548.49