Finding the Fourth Proportional to 161,105.72, 222,355.01 and 93,113.31

Step by Step Solution

1. Step 1: Write the proportion equation
   161,105.72 : 222,355.01 = 93,113.31 : x
2. Step 2: Convert to fraction form
   161,105.72/222,355.01 = 93,113.31/x
3. Step 3: Cross multiply
   161,105.72x = 222,355.01 × 93,113.31
4. Step 4: Simplify right side
   161,105.72x = 20,704,210,976.18
5. Step 5: Solve for x
   x = 20,704,210,976.18/161,105.72
6. Step 6: Final answer
   x = 128,513.20