Finding the Fourth Proportional to 89,930.79, 124,105.50 and 49,644.59

Step by Step Solution

1. Step 1: Write the proportion equation
   89,930.79 : 124,105.50 = 49,644.59 : x
2. Step 2: Convert to fraction form
   89,930.79/124,105.50 = 49,644.59/x
3. Step 3: Cross multiply
   89,930.79x = 124,105.50 × 49,644.59
4. Step 4: Simplify right side
   89,930.79x = 6,161,166,043.72
5. Step 5: Solve for x
   x = 6,161,166,043.72/89,930.79
6. Step 6: Final answer
   x = 68,510.08