Finding the Fourth Proportional to 89,498.54, 123,477.24 and 55,494.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,498.54 : 123,477.24 = 55,494.78 : x
2. Step 2: Convert to fraction form
   89,498.54/123,477.24 = 55,494.78/x
3. Step 3: Cross multiply
   89,498.54x = 123,477.24 × 55,494.78
4. Step 4: Simplify right side
   89,498.54x = 6,852,342,268.81
5. Step 5: Solve for x
   x = 6,852,342,268.81/89,498.54
6. Step 6: Final answer
   x = 76,563.74