Finding the Fourth Proportional to 89,360.40, 123,375.09 and 55,404.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,360.40 : 123,375.09 = 55,404.96 : x
2. Step 2: Convert to fraction form
   89,360.40/123,375.09 = 55,404.96/x
3. Step 3: Cross multiply
   89,360.40x = 123,375.09 × 55,404.96
4. Step 4: Simplify right side
   89,360.40x = 6,835,591,926.45
5. Step 5: Solve for x
   x = 6,835,591,926.45/89,360.40
6. Step 6: Final answer
   x = 76,494.64