Finding the Fourth Proportional to 89,669.50, 123,755.79 and 57,930.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,669.50 : 123,755.79 = 57,930.73 : x
2. Step 2: Convert to fraction form
   89,669.50/123,755.79 = 57,930.73/x
3. Step 3: Cross multiply
   89,669.50x = 123,755.79 × 57,930.73
4. Step 4: Simplify right side
   89,669.50x = 7,169,263,256.43
5. Step 5: Solve for x
   x = 7,169,263,256.43/89,669.50
6. Step 6: Final answer
   x = 79,952.08