Finding the Fourth Proportional to 111,667.05, 154,083.15 and 66,343.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,667.05 : 154,083.15 = 66,343.86 : x
2. Step 2: Convert to fraction form
   111,667.05/154,083.15 = 66,343.86/x
3. Step 3: Cross multiply
   111,667.05x = 154,083.15 × 66,343.86
4. Step 4: Simplify right side
   111,667.05x = 10,222,470,931.96
5. Step 5: Solve for x
   x = 10,222,470,931.96/111,667.05
6. Step 6: Final answer
   x = 91,544.20