Finding the Fourth Proportional to 134,105.72, 185,069.88 and 73,680.12

Step by Step Solution

1. Step 1: Write the proportion equation
   134,105.72 : 185,069.88 = 73,680.12 : x
2. Step 2: Convert to fraction form
   134,105.72/185,069.88 = 73,680.12/x
3. Step 3: Cross multiply
   134,105.72x = 185,069.88 × 73,680.12
4. Step 4: Simplify right side
   134,105.72x = 13,635,970,966.79
5. Step 5: Solve for x
   x = 13,635,970,966.79/134,105.72
6. Step 6: Final answer
   x = 101,680.76