Finding the Fourth Proportional to 89,258.76, 123,181.56 and 51,020.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,258.76 : 123,181.56 = 51,020.28 : x
2. Step 2: Convert to fraction form
   89,258.76/123,181.56 = 51,020.28/x
3. Step 3: Cross multiply
   89,258.76x = 123,181.56 × 51,020.28
4. Step 4: Simplify right side
   89,258.76x = 6,284,757,682.04
5. Step 5: Solve for x
   x = 6,284,757,682.04/89,258.76
6. Step 6: Final answer
   x = 70,410.54