Finding the Fourth Proportional to 89,719.56, 134,698.38 and 76,655.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,719.56 : 134,698.38 = 76,655.88 : x
2. Step 2: Convert to fraction form
   89,719.56/134,698.38 = 76,655.88/x
3. Step 3: Cross multiply
   89,719.56x = 134,698.38 × 76,655.88
4. Step 4: Simplify right side
   89,719.56x = 10,325,422,853.47
5. Step 5: Solve for x
   x = 10,325,422,853.47/89,719.56
6. Step 6: Final answer
   x = 115,085.53