Finding the Fourth Proportional to 105,016.62, 157,619.62 and 71,200.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,016.62 : 157,619.62 = 71,200.84 : x
2. Step 2: Convert to fraction form
   105,016.62/157,619.62 = 71,200.84/x
3. Step 3: Cross multiply
   105,016.62x = 157,619.62 × 71,200.84
4. Step 4: Simplify right side
   105,016.62x = 11,222,649,344.48
5. Step 5: Solve for x
   x = 11,222,649,344.48/105,016.62
6. Step 6: Final answer
   x = 106,865.46