Finding the Fourth Proportional to 161,436.86, 222,782.99 and 89,816.93

Step by Step Solution

1. Step 1: Write the proportion equation
   161,436.86 : 222,782.99 = 89,816.93 : x
2. Step 2: Convert to fraction form
   161,436.86/222,782.99 = 89,816.93/x
3. Step 3: Cross multiply
   161,436.86x = 222,782.99 × 89,816.93
4. Step 4: Simplify right side
   161,436.86x = 20,009,684,325.89
5. Step 5: Solve for x
   x = 20,009,684,325.89/161,436.86
6. Step 6: Final answer
   x = 123,947.43