Finding the Fourth Proportional to 116,087.72, 160,155 and 75,788.60

Step by Step Solution

1. Step 1: Write the proportion equation
   116,087.72 : 160,155 = 75,788.60 : x
2. Step 2: Convert to fraction form
   116,087.72/160,155 = 75,788.60/x
3. Step 3: Cross multiply
   116,087.72x = 160,155 × 75,788.60
4. Step 4: Simplify right side
   116,087.72x = 12,137,923,233
5. Step 5: Solve for x
   x = 12,137,923,233/116,087.72
6. Step 6: Final answer
   x = 104,558.20