Finding the Fourth Proportional to 89,950.56, 124,146.72 and 85,964.64

Step by Step Solution

1. Step 1: Write the proportion equation
   89,950.56 : 124,146.72 = 85,964.64 : x
2. Step 2: Convert to fraction form
   89,950.56/124,146.72 = 85,964.64/x
3. Step 3: Cross multiply
   89,950.56x = 124,146.72 × 85,964.64
4. Step 4: Simplify right side
   89,950.56x = 10,672,228,091.98
5. Step 5: Solve for x
   x = 10,672,228,091.98/89,950.56
6. Step 6: Final answer
   x = 118,645.49