Finding the Fourth Proportional to 107,007.94, 160,499.76 and 28,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   107,007.94 : 160,499.76 = 28,128.32 : x
2. Step 2: Convert to fraction form
   107,007.94/160,499.76 = 28,128.32/x
3. Step 3: Cross multiply
   107,007.94x = 160,499.76 × 28,128.32
4. Step 4: Simplify right side
   107,007.94x = 4,514,588,609.20
5. Step 5: Solve for x
   x = 4,514,588,609.20/107,007.94
6. Step 6: Final answer
   x = 42,189.29