Finding the Fourth Proportional to 112,324.65, 154,744.59 and 78,271.34

Step by Step Solution

1. Step 1: Write the proportion equation
   112,324.65 : 154,744.59 = 78,271.34 : x
2. Step 2: Convert to fraction form
   112,324.65/154,744.59 = 78,271.34/x
3. Step 3: Cross multiply
   112,324.65x = 154,744.59 × 78,271.34
4. Step 4: Simplify right side
   112,324.65x = 12,112,066,025.69
5. Step 5: Solve for x
   x = 12,112,066,025.69/112,324.65
6. Step 6: Final answer
   x = 107,830.88