Finding the Fourth Proportional to 112,776.92, 155,648.72 and 65,020.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,776.92 : 155,648.72 = 65,020.92 : x
2. Step 2: Convert to fraction form
   112,776.92/155,648.72 = 65,020.92/x
3. Step 3: Cross multiply
   112,776.92x = 155,648.72 × 65,020.92
4. Step 4: Simplify right side
   112,776.92x = 10,120,422,971.22
5. Step 5: Solve for x
   x = 10,120,422,971.22/112,776.92
6. Step 6: Final answer
   x = 89,738.42