Finding the Fourth Proportional to 111,641.87, 167,604.96 and 72,363.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,641.87 : 167,604.96 = 72,363.35 : x
2. Step 2: Convert to fraction form
   111,641.87/167,604.96 = 72,363.35/x
3. Step 3: Cross multiply
   111,641.87x = 167,604.96 × 72,363.35
4. Step 4: Simplify right side
   111,641.87x = 12,128,456,382.22
5. Step 5: Solve for x
   x = 12,128,456,382.22/111,641.87
6. Step 6: Final answer
   x = 108,637.17