Finding the Fourth Proportional to 108,131.18, 149,233.73 and 89,949.81

Step by Step Solution

1. Step 1: Write the proportion equation
   108,131.18 : 149,233.73 = 89,949.81 : x
2. Step 2: Convert to fraction form
   108,131.18/149,233.73 = 89,949.81/x
3. Step 3: Cross multiply
   108,131.18x = 149,233.73 × 89,949.81
4. Step 4: Simplify right side
   108,131.18x = 13,423,545,209.34
5. Step 5: Solve for x
   x = 13,423,545,209.34/108,131.18
6. Step 6: Final answer
   x = 124,141.30