Finding the Fourth Proportional to 35,985.51, 49,659.39 and 20,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,985.51 : 49,659.39 = 20,880.72 : x
2. Step 2: Convert to fraction form
   35,985.51/49,659.39 = 20,880.72/x
3. Step 3: Cross multiply
   35,985.51x = 49,659.39 × 20,880.72
4. Step 4: Simplify right side
   35,985.51x = 1,036,923,817.96
5. Step 5: Solve for x
   x = 1,036,923,817.96/35,985.51
6. Step 6: Final answer
   x = 28,815.04