Finding the Fourth Proportional to 112,910.60, 155,805.40 and 65,179.33

Step by Step Solution

1. Step 1: Write the proportion equation
   112,910.60 : 155,805.40 = 65,179.33 : x
2. Step 2: Convert to fraction form
   112,910.60/155,805.40 = 65,179.33/x
3. Step 3: Cross multiply
   112,910.60x = 155,805.40 × 65,179.33
4. Step 4: Simplify right side
   112,910.60x = 10,155,291,355.82
5. Step 5: Solve for x
   x = 10,155,291,355.82/112,910.60
6. Step 6: Final answer
   x = 89,940.99