Finding the Fourth Proportional to 108,384.89, 149,612.67 and 72,561.83

Step by Step Solution

1. Step 1: Write the proportion equation
   108,384.89 : 149,612.67 = 72,561.83 : x
2. Step 2: Convert to fraction form
   108,384.89/149,612.67 = 72,561.83/x
3. Step 3: Cross multiply
   108,384.89x = 149,612.67 × 72,561.83
4. Step 4: Simplify right side
   108,384.89x = 10,856,168,378.32
5. Step 5: Solve for x
   x = 10,856,168,378.32/108,384.89
6. Step 6: Final answer
   x = 100,163.12