Finding the Fourth Proportional to 89,198.88, 123,092.61 and 55,198.32

Step by Step Solution

1. Step 1: Write the proportion equation
   89,198.88 : 123,092.61 = 55,198.32 : x
2. Step 2: Convert to fraction form
   89,198.88/123,092.61 = 55,198.32/x
3. Step 3: Cross multiply
   89,198.88x = 123,092.61 × 55,198.32
4. Step 4: Simplify right side
   89,198.88x = 6,794,505,276.42
5. Step 5: Solve for x
   x = 6,794,505,276.42/89,198.88
6. Step 6: Final answer
   x = 76,172.54