Finding the Fourth Proportional to 111,806.10, 167,363.55 and 64,919.70

Step by Step Solution

1. Step 1: Write the proportion equation
   111,806.10 : 167,363.55 = 64,919.70 : x
2. Step 2: Convert to fraction form
   111,806.10/167,363.55 = 64,919.70/x
3. Step 3: Cross multiply
   111,806.10x = 167,363.55 × 64,919.70
4. Step 4: Simplify right side
   111,806.10x = 10,865,191,456.94
5. Step 5: Solve for x
   x = 10,865,191,456.94/111,806.10
6. Step 6: Final answer
   x = 97,178.88