Finding the Fourth Proportional to 108,684.48, 149,948.73 and 65,647.89

Step by Step Solution

1. Step 1: Write the proportion equation
   108,684.48 : 149,948.73 = 65,647.89 : x
2. Step 2: Convert to fraction form
   108,684.48/149,948.73 = 65,647.89/x
3. Step 3: Cross multiply
   108,684.48x = 149,948.73 × 65,647.89
4. Step 4: Simplify right side
   108,684.48x = 9,843,817,732.68
5. Step 5: Solve for x
   x = 9,843,817,732.68/108,684.48
6. Step 6: Final answer
   x = 90,572.43