Finding the Fourth Proportional to 107,208.68, 160,820.72 and 28,322.12

Step by Step Solution

1. Step 1: Write the proportion equation
   107,208.68 : 160,820.72 = 28,322.12 : x
2. Step 2: Convert to fraction form
   107,208.68/160,820.72 = 28,322.12/x
3. Step 3: Cross multiply
   107,208.68x = 160,820.72 × 28,322.12
4. Step 4: Simplify right side
   107,208.68x = 4,554,783,730.33
5. Step 5: Solve for x
   x = 4,554,783,730.33/107,208.68
6. Step 6: Final answer
   x = 42,485.21