Finding the Fourth Proportional to 111,667.89, 154,125.99 and 68,684.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,667.89 : 154,125.99 = 68,684.31 : x
2. Step 2: Convert to fraction form
   111,667.89/154,125.99 = 68,684.31/x
3. Step 3: Cross multiply
   111,667.89x = 154,125.99 × 68,684.31
4. Step 4: Simplify right side
   111,667.89x = 10,586,037,276.22
5. Step 5: Solve for x
   x = 10,586,037,276.22/111,667.89
6. Step 6: Final answer
   x = 94,799.30