Finding the Fourth Proportional to 89,485.83, 123,490.53 and 49,200.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,485.83 : 123,490.53 = 49,200.28 : x
2. Step 2: Convert to fraction form
   89,485.83/123,490.53 = 49,200.28/x
3. Step 3: Cross multiply
   89,485.83x = 123,490.53 × 49,200.28
4. Step 4: Simplify right side
   89,485.83x = 6,075,768,344.62
5. Step 5: Solve for x
   x = 6,075,768,344.62/89,485.83
6. Step 6: Final answer
   x = 67,896.43