Finding the Fourth Proportional to 100,855.50, 151,100.76 and 72,622.70

Step by Step Solution

1. Step 1: Write the proportion equation
   100,855.50 : 151,100.76 = 72,622.70 : x
2. Step 2: Convert to fraction form
   100,855.50/151,100.76 = 72,622.70/x
3. Step 3: Cross multiply
   100,855.50x = 151,100.76 × 72,622.70
4. Step 4: Simplify right side
   100,855.50x = 10,973,345,163.25
5. Step 5: Solve for x
   x = 10,973,345,163.25/100,855.50
6. Step 6: Final answer
   x = 108,802.65