Finding the Fourth Proportional to 160,749.34, 221,825.88 and 89,128.66

Step by Step Solution

1. Step 1: Write the proportion equation
   160,749.34 : 221,825.88 = 89,128.66 : x
2. Step 2: Convert to fraction form
   160,749.34/221,825.88 = 89,128.66/x
3. Step 3: Cross multiply
   160,749.34x = 221,825.88 × 89,128.66
4. Step 4: Simplify right side
   160,749.34x = 19,771,043,437.72
5. Step 5: Solve for x
   x = 19,771,043,437.72/160,749.34
6. Step 6: Final answer
   x = 122,993.00