Finding the Fourth Proportional to 107,382.72, 161,061.57 and 28,503.08

Step by Step Solution

1. Step 1: Write the proportion equation
   107,382.72 : 161,061.57 = 28,503.08 : x
2. Step 2: Convert to fraction form
   107,382.72/161,061.57 = 28,503.08/x
3. Step 3: Cross multiply
   107,382.72x = 161,061.57 × 28,503.08
4. Step 4: Simplify right side
   107,382.72x = 4,590,750,009.33
5. Step 5: Solve for x
   x = 4,590,750,009.33/107,382.72
6. Step 6: Final answer
   x = 42,751.29