Finding the Fourth Proportional to 108,751.56, 149,990.58 and 89,855.88

Step by Step Solution

1. Step 1: Write the proportion equation
   108,751.56 : 149,990.58 = 89,855.88 : x
2. Step 2: Convert to fraction form
   108,751.56/149,990.58 = 89,855.88/x
3. Step 3: Cross multiply
   108,751.56x = 149,990.58 × 89,855.88
4. Step 4: Simplify right side
   108,751.56x = 13,477,535,557.61
5. Step 5: Solve for x
   x = 13,477,535,557.61/108,751.56
6. Step 6: Final answer
   x = 123,929.58