Finding the Fourth Proportional to 115,980.02, 160,129.56 and 89,074.46

Step by Step Solution

1. Step 1: Write the proportion equation
   115,980.02 : 160,129.56 = 89,074.46 : x
2. Step 2: Convert to fraction form
   115,980.02/160,129.56 = 89,074.46/x
3. Step 3: Cross multiply
   115,980.02x = 160,129.56 × 89,074.46
4. Step 4: Simplify right side
   115,980.02x = 14,263,454,087.04
5. Step 5: Solve for x
   x = 14,263,454,087.04/115,980.02
6. Step 6: Final answer
   x = 122,981.99