Finding the Fourth Proportional to 89,485.95, 123,490.71 and 49,200.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,485.95 : 123,490.71 = 49,200.39 : x
2. Step 2: Convert to fraction form
   89,485.95/123,490.71 = 49,200.39/x
3. Step 3: Cross multiply
   89,485.95x = 123,490.71 × 49,200.39
4. Step 4: Simplify right side
   89,485.95x = 6,075,791,093.38
5. Step 5: Solve for x
   x = 6,075,791,093.38/89,485.95
6. Step 6: Final answer
   x = 67,896.59