Finding the Fourth Proportional to 65,802.72, 90,806.40 and 35,994.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,802.72 : 90,806.40 = 35,994.72 : x
2. Step 2: Convert to fraction form
   65,802.72/90,806.40 = 35,994.72/x
3. Step 3: Cross multiply
   65,802.72x = 90,806.40 × 35,994.72
4. Step 4: Simplify right side
   65,802.72x = 3,268,550,942.21
5. Step 5: Solve for x
   x = 3,268,550,942.21/65,802.72
6. Step 6: Final answer
   x = 49,671.97