Finding the Fourth Proportional to 81,081.58, 121,424.73 and 45,914.62

Step by Step Solution

1. Step 1: Write the proportion equation
   81,081.58 : 121,424.73 = 45,914.62 : x
2. Step 2: Convert to fraction form
   81,081.58/121,424.73 = 45,914.62/x
3. Step 3: Cross multiply
   81,081.58x = 121,424.73 × 45,914.62
4. Step 4: Simplify right side
   81,081.58x = 5,575,170,336.55
5. Step 5: Solve for x
   x = 5,575,170,336.55/81,081.58
6. Step 6: Final answer
   x = 68,760.01