Finding the Fourth Proportional to 112,910.10, 155,804.72 and 65,178.83

Step by Step Solution

1. Step 1: Write the proportion equation
   112,910.10 : 155,804.72 = 65,178.83 : x
2. Step 2: Convert to fraction form
   112,910.10/155,804.72 = 65,178.83/x
3. Step 3: Cross multiply
   112,910.10x = 155,804.72 × 65,178.83
4. Step 4: Simplify right side
   112,910.10x = 10,155,168,253.16
5. Step 5: Solve for x
   x = 10,155,168,253.16/112,910.10
6. Step 6: Final answer
   x = 89,940.30