Finding the Fourth Proportional to 116,155.20, 160,297.76 and 65,856.32

Step by Step Solution

1. Step 1: Write the proportion equation
   116,155.20 : 160,297.76 = 65,856.32 : x
2. Step 2: Convert to fraction form
   116,155.20/160,297.76 = 65,856.32/x
3. Step 3: Cross multiply
   116,155.20x = 160,297.76 × 65,856.32
4. Step 4: Simplify right side
   116,155.20x = 10,556,620,577.84
5. Step 5: Solve for x
   x = 10,556,620,577.84/116,155.20
6. Step 6: Final answer
   x = 90,883.75