Finding the Fourth Proportional to 89,809.50, 123,942.33 and 49,531.83

Step by Step Solution

1. Step 1: Write the proportion equation
   89,809.50 : 123,942.33 = 49,531.83 : x
2. Step 2: Convert to fraction form
   89,809.50/123,942.33 = 49,531.83/x
3. Step 3: Cross multiply
   89,809.50x = 123,942.33 × 49,531.83
4. Step 4: Simplify right side
   89,809.50x = 6,139,090,419.36
5. Step 5: Solve for x
   x = 6,139,090,419.36/89,809.50
6. Step 6: Final answer
   x = 68,356.80