Finding the Fourth Proportional to 78,612.48, 108,550.53 and 72,914.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,612.48 : 108,550.53 = 72,914.16 : x
2. Step 2: Convert to fraction form
   78,612.48/108,550.53 = 72,914.16/x
3. Step 3: Cross multiply
   78,612.48x = 108,550.53 × 72,914.16
4. Step 4: Simplify right side
   78,612.48x = 7,914,870,712.50
5. Step 5: Solve for x
   x = 7,914,870,712.50/78,612.48
6. Step 6: Final answer
   x = 100,682.11