Finding the Fourth Proportional to 89,485.72, 123,490.54 and 49,203.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,485.72 : 123,490.54 = 49,203.60 : x
2. Step 2: Convert to fraction form
   89,485.72/123,490.54 = 49,203.60/x
3. Step 3: Cross multiply
   89,485.72x = 123,490.54 × 49,203.60
4. Step 4: Simplify right side
   89,485.72x = 6,076,179,133.94
5. Step 5: Solve for x
   x = 6,076,179,133.94/89,485.72
6. Step 6: Final answer
   x = 67,901.10