Finding the Fourth Proportional to 160,980.65, 222,142.17 and 89,355.02

Step by Step Solution

1. Step 1: Write the proportion equation
   160,980.65 : 222,142.17 = 89,355.02 : x
2. Step 2: Convert to fraction form
   160,980.65/222,142.17 = 89,355.02/x
3. Step 3: Cross multiply
   160,980.65x = 222,142.17 × 89,355.02
4. Step 4: Simplify right side
   160,980.65x = 19,849,518,598.55
5. Step 5: Solve for x
   x = 19,849,518,598.55/160,980.65
6. Step 6: Final answer
   x = 123,303.76