Finding the Fourth Proportional to 72,485.25, 108,801.60 and 49,997.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,485.25 : 108,801.60 = 49,997.49 : x
2. Step 2: Convert to fraction form
   72,485.25/108,801.60 = 49,997.49/x
3. Step 3: Cross multiply
   72,485.25x = 108,801.60 × 49,997.49
4. Step 4: Simplify right side
   72,485.25x = 5,439,806,907.98
5. Step 5: Solve for x
   x = 5,439,806,907.98/72,485.25
6. Step 6: Final answer
   x = 75,047.09