Finding the Fourth Proportional to 89,919.76, 123,992.04 and 61,258

Step by Step Solution

1. Step 1: Write the proportion equation
   89,919.76 : 123,992.04 = 61,258 : x
2. Step 2: Convert to fraction form
   89,919.76/123,992.04 = 61,258/x
3. Step 3: Cross multiply
   89,919.76x = 123,992.04 × 61,258
4. Step 4: Simplify right side
   89,919.76x = 7,595,504,386.32
5. Step 5: Solve for x
   x = 7,595,504,386.32/89,919.76
6. Step 6: Final answer
   x = 84,469.80