Finding the Fourth Proportional to 89,809.74, 134,626.59 and 76,512.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,809.74 : 134,626.59 = 76,512.78 : x
2. Step 2: Convert to fraction form
   89,809.74/134,626.59 = 76,512.78/x
3. Step 3: Cross multiply
   89,809.74x = 134,626.59 × 76,512.78
4. Step 4: Simplify right side
   89,809.74x = 10,300,654,662.82
5. Step 5: Solve for x
   x = 10,300,654,662.82/89,809.74
6. Step 6: Final answer
   x = 114,694.18