Finding the Fourth Proportional to 161,103.72, 222,352.25 and 93,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   161,103.72 : 222,352.25 = 93,111.31 : x
2. Step 2: Convert to fraction form
   161,103.72/222,352.25 = 93,111.31/x
3. Step 3: Cross multiply
   161,103.72x = 222,352.25 × 93,111.31
4. Step 4: Simplify right side
   161,103.72x = 20,703,509,278.95
5. Step 5: Solve for x
   x = 20,703,509,278.95/161,103.72
6. Step 6: Final answer
   x = 128,510.44