Finding the Fourth Proportional to 79,086.69, 109,142.37 and 45,100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   79,086.69 : 109,142.37 = 45,100.31 : x
2. Step 2: Convert to fraction form
   79,086.69/109,142.37 = 45,100.31/x
3. Step 3: Cross multiply
   79,086.69x = 109,142.37 × 45,100.31
4. Step 4: Simplify right side
   79,086.69x = 4,922,354,175.42
5. Step 5: Solve for x
   x = 4,922,354,175.42/79,086.69
6. Step 6: Final answer
   x = 62,239.98