Finding the Fourth Proportional to 151,559.05, 209,146.69 and 83,578.89

Step by Step Solution

1. Step 1: Write the proportion equation
   151,559.05 : 209,146.69 = 83,578.89 : x
2. Step 2: Convert to fraction form
   151,559.05/209,146.69 = 83,578.89/x
3. Step 3: Cross multiply
   151,559.05x = 209,146.69 × 83,578.89
4. Step 4: Simplify right side
   151,559.05x = 17,480,248,197.37
5. Step 5: Solve for x
   x = 17,480,248,197.37/151,559.05
6. Step 6: Final answer
   x = 115,336.22