Finding the Fourth Proportional to 80,789.19, 121,127.57 and 35,786.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,789.19 : 121,127.57 = 35,786.12 : x
2. Step 2: Convert to fraction form
   80,789.19/121,127.57 = 35,786.12/x
3. Step 3: Cross multiply
   80,789.19x = 121,127.57 × 35,786.12
4. Step 4: Simplify right side
   80,789.19x = 4,334,685,755.33
5. Step 5: Solve for x
   x = 4,334,685,755.33/80,789.19
6. Step 6: Final answer
   x = 53,654.28