Finding the Fourth Proportional to 109,680.30, 164,411.10 and 50,412.60

Step by Step Solution

1. Step 1: Write the proportion equation
   109,680.30 : 164,411.10 = 50,412.60 : x
2. Step 2: Convert to fraction form
   109,680.30/164,411.10 = 50,412.60/x
3. Step 3: Cross multiply
   109,680.30x = 164,411.10 × 50,412.60
4. Step 4: Simplify right side
   109,680.30x = 8,288,391,019.86
5. Step 5: Solve for x
   x = 8,288,391,019.86/109,680.30
6. Step 6: Final answer
   x = 75,568.64