Finding the Fourth Proportional to 107,100.73, 160,638.86 and 28,221.13

Step by Step Solution

1. Step 1: Write the proportion equation
   107,100.73 : 160,638.86 = 28,221.13 : x
2. Step 2: Convert to fraction form
   107,100.73/160,638.86 = 28,221.13/x
3. Step 3: Cross multiply
   107,100.73x = 160,638.86 × 28,221.13
4. Step 4: Simplify right side
   107,100.73x = 4,533,410,010.01
5. Step 5: Solve for x
   x = 4,533,410,010.01/107,100.73
6. Step 6: Final answer
   x = 42,328.47