Finding the Fourth Proportional to 105,085.16, 157,257.90 and 65,660.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,085.16 : 157,257.90 = 65,660.84 : x
2. Step 2: Convert to fraction form
   105,085.16/157,257.90 = 65,660.84/x
3. Step 3: Cross multiply
   105,085.16x = 157,257.90 × 65,660.84
4. Step 4: Simplify right side
   105,085.16x = 10,325,685,810.64
5. Step 5: Solve for x
   x = 10,325,685,810.64/105,085.16
6. Step 6: Final answer
   x = 98,260.17