Finding the Fourth Proportional to 108,465.30, 149,677.74 and 63,144.59

Step by Step Solution

1. Step 1: Write the proportion equation
   108,465.30 : 149,677.74 = 63,144.59 : x
2. Step 2: Convert to fraction form
   108,465.30/149,677.74 = 63,144.59/x
3. Step 3: Cross multiply
   108,465.30x = 149,677.74 × 63,144.59
4. Step 4: Simplify right side
   108,465.30x = 9,451,338,776.04
5. Step 5: Solve for x
   x = 9,451,338,776.04/108,465.30
6. Step 6: Final answer
   x = 87,136.98