Finding the Fourth Proportional to 71,584.86, 98,880.12 and 54,485.22

Step by Step Solution

1. Step 1: Write the proportion equation
   71,584.86 : 98,880.12 = 54,485.22 : x
2. Step 2: Convert to fraction form
   71,584.86/98,880.12 = 54,485.22/x
3. Step 3: Cross multiply
   71,584.86x = 98,880.12 × 54,485.22
4. Step 4: Simplify right side
   71,584.86x = 5,387,505,091.83
5. Step 5: Solve for x
   x = 5,387,505,091.83/71,584.86
6. Step 6: Final answer
   x = 75,260.40