Finding the Fourth Proportional to 112,910.68, 155,805.51 and 65,179.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,910.68 : 155,805.51 = 65,179.40 : x
2. Step 2: Convert to fraction form
   112,910.68/155,805.51 = 65,179.40/x
3. Step 3: Cross multiply
   112,910.68x = 155,805.51 × 65,179.40
4. Step 4: Simplify right side
   112,910.68x = 10,155,310,401.25
5. Step 5: Solve for x
   x = 10,155,310,401.25/112,910.68
6. Step 6: Final answer
   x = 89,941.10