Finding the Fourth Proportional to 108,171, 149,179.01 and 90,081.63

Step by Step Solution

1. Step 1: Write the proportion equation
   108,171 : 149,179.01 = 90,081.63 : x
2. Step 2: Convert to fraction form
   108,171/149,179.01 = 90,081.63/x
3. Step 3: Cross multiply
   108,171x = 149,179.01 × 90,081.63
4. Step 4: Simplify right side
   108,171x = 13,438,287,932.18
5. Step 5: Solve for x
   x = 13,438,287,932.18/108,171
6. Step 6: Final answer
   x = 124,231.89