Finding the Fourth Proportional to 89,358.42, 123,309 and 49,071.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,358.42 : 123,309 = 49,071.96 : x
2. Step 2: Convert to fraction form
   89,358.42/123,309 = 49,071.96/x
3. Step 3: Cross multiply
   89,358.42x = 123,309 × 49,071.96
4. Step 4: Simplify right side
   89,358.42x = 6,051,014,315.64
5. Step 5: Solve for x
   x = 6,051,014,315.64/89,358.42
6. Step 6: Final answer
   x = 67,716.22