Finding the Fourth Proportional to 89,453.60, 123,309.51 and 75,791.21

Step by Step Solution

1. Step 1: Write the proportion equation
   89,453.60 : 123,309.51 = 75,791.21 : x
2. Step 2: Convert to fraction form
   89,453.60/123,309.51 = 75,791.21/x
3. Step 3: Cross multiply
   89,453.60x = 123,309.51 × 75,791.21
4. Step 4: Simplify right side
   89,453.60x = 9,345,777,105.06
5. Step 5: Solve for x
   x = 9,345,777,105.06/89,453.60
6. Step 6: Final answer
   x = 104,476.26