Finding the Fourth Proportional to 89,352.56, 134,656.37 and 80,479.01

Step by Step Solution

1. Step 1: Write the proportion equation
   89,352.56 : 134,656.37 = 80,479.01 : x
2. Step 2: Convert to fraction form
   89,352.56/134,656.37 = 80,479.01/x
3. Step 3: Cross multiply
   89,352.56x = 134,656.37 × 80,479.01
4. Step 4: Simplify right side
   89,352.56x = 10,837,010,272.12
5. Step 5: Solve for x
   x = 10,837,010,272.12/89,352.56
6. Step 6: Final answer
   x = 121,283.72