Finding the Fourth Proportional to 108,319.48, 149,501.55 and 72,571.82

Step by Step Solution

1. Step 1: Write the proportion equation
   108,319.48 : 149,501.55 = 72,571.82 : x
2. Step 2: Convert to fraction form
   108,319.48/149,501.55 = 72,571.82/x
3. Step 3: Cross multiply
   108,319.48x = 149,501.55 × 72,571.82
4. Step 4: Simplify right side
   108,319.48x = 10,849,598,692.74
5. Step 5: Solve for x
   x = 10,849,598,692.74/108,319.48
6. Step 6: Final answer
   x = 100,162.95