Finding the Fourth Proportional to 108,136.82, 149,145.88 and 65,071.42

Step by Step Solution

1. Step 1: Write the proportion equation
   108,136.82 : 149,145.88 = 65,071.42 : x
2. Step 2: Convert to fraction form
   108,136.82/149,145.88 = 65,071.42/x
3. Step 3: Cross multiply
   108,136.82x = 149,145.88 × 65,071.42
4. Step 4: Simplify right side
   108,136.82x = 9,705,134,198.75
5. Step 5: Solve for x
   x = 9,705,134,198.75/108,136.82
6. Step 6: Final answer
   x = 89,748.66