Finding the Fourth Proportional to 89,577.99, 123,621.69 and 55,597.43

Step by Step Solution

1. Step 1: Write the proportion equation
   89,577.99 : 123,621.69 = 55,597.43 : x
2. Step 2: Convert to fraction form
   89,577.99/123,621.69 = 55,597.43/x
3. Step 3: Cross multiply
   89,577.99x = 123,621.69 × 55,597.43
4. Step 4: Simplify right side
   89,577.99x = 6,873,047,638.15
5. Step 5: Solve for x
   x = 6,873,047,638.15/89,577.99
6. Step 6: Final answer
   x = 76,726.97