Finding the Fourth Proportional to 160,139, 220,991.82 and 89,483

Step by Step Solution

1. Step 1: Write the proportion equation
   160,139 : 220,991.82 = 89,483 : x
2. Step 2: Convert to fraction form
   160,139/220,991.82 = 89,483/x
3. Step 3: Cross multiply
   160,139x = 220,991.82 × 89,483
4. Step 4: Simplify right side
   160,139x = 19,775,011,029.06
5. Step 5: Solve for x
   x = 19,775,011,029.06/160,139
6. Step 6: Final answer
   x = 123,486.54