Finding the Fourth Proportional to 89,815.76, 123,945.75 and 51,577.82

Step by Step Solution

1. Step 1: Write the proportion equation
   89,815.76 : 123,945.75 = 51,577.82 : x
2. Step 2: Convert to fraction form
   89,815.76/123,945.75 = 51,577.82/x
3. Step 3: Cross multiply
   89,815.76x = 123,945.75 × 51,577.82
4. Step 4: Simplify right side
   89,815.76x = 6,392,851,583.27
5. Step 5: Solve for x
   x = 6,392,851,583.27/89,815.76
6. Step 6: Final answer
   x = 71,177.39