Finding the Fourth Proportional to 116,390.09, 160,477.43 and 90,556.15

Step by Step Solution

1. Step 1: Write the proportion equation
   116,390.09 : 160,477.43 = 90,556.15 : x
2. Step 2: Convert to fraction form
   116,390.09/160,477.43 = 90,556.15/x
3. Step 3: Cross multiply
   116,390.09x = 160,477.43 × 90,556.15
4. Step 4: Simplify right side
   116,390.09x = 14,532,218,222.69
5. Step 5: Solve for x
   x = 14,532,218,222.69/116,390.09
6. Step 6: Final answer
   x = 124,857.87