Finding the Fourth Proportional to 35,429.81, 48,888.89 and 20,321.69

Step by Step Solution

1. Step 1: Write the proportion equation
   35,429.81 : 48,888.89 = 20,321.69 : x
2. Step 2: Convert to fraction form
   35,429.81/48,888.89 = 20,321.69/x
3. Step 3: Cross multiply
   35,429.81x = 48,888.89 × 20,321.69
4. Step 4: Simplify right side
   35,429.81x = 993,504,887.64
5. Step 5: Solve for x
   x = 993,504,887.64/35,429.81
6. Step 6: Final answer
   x = 28,041.49