Finding the Fourth Proportional to 108,757.56, 149,998.86 and 89,861.88

Step by Step Solution

1. Step 1: Write the proportion equation
   108,757.56 : 149,998.86 = 89,861.88 : x
2. Step 2: Convert to fraction form
   108,757.56/149,998.86 = 89,861.88/x
3. Step 3: Cross multiply
   108,757.56x = 149,998.86 × 89,861.88
4. Step 4: Simplify right side
   108,757.56x = 13,479,179,557.46
5. Step 5: Solve for x
   x = 13,479,179,557.46/108,757.56
6. Step 6: Final answer
   x = 123,937.86