Finding the Fourth Proportional to 160,820.82, 221,959.31 and 89,223.91

Step by Step Solution

1. Step 1: Write the proportion equation
   160,820.82 : 221,959.31 = 89,223.91 : x
2. Step 2: Convert to fraction form
   160,820.82/221,959.31 = 89,223.91/x
3. Step 3: Cross multiply
   160,820.82x = 221,959.31 × 89,223.91
4. Step 4: Simplify right side
   160,820.82x = 19,804,076,498.08
5. Step 5: Solve for x
   x = 19,804,076,498.08/160,820.82
6. Step 6: Final answer
   x = 123,143.74