Finding the Fourth Proportional to 43,435.94, 65,152.56 and 13,855.55

Step by Step Solution

1. Step 1: Write the proportion equation
   43,435.94 : 65,152.56 = 13,855.55 : x
2. Step 2: Convert to fraction form
   43,435.94/65,152.56 = 13,855.55/x
3. Step 3: Cross multiply
   43,435.94x = 65,152.56 × 13,855.55
4. Step 4: Simplify right side
   43,435.94x = 902,724,552.71
5. Step 5: Solve for x
   x = 902,724,552.71/43,435.94
6. Step 6: Final answer
   x = 20,782.89