Finding the Fourth Proportional to 108,100.71, 149,136.03 and 72,233.91

Step by Step Solution

1. Step 1: Write the proportion equation
   108,100.71 : 149,136.03 = 72,233.91 : x
2. Step 2: Convert to fraction form
   108,100.71/149,136.03 = 72,233.91/x
3. Step 3: Cross multiply
   108,100.71x = 149,136.03 × 72,233.91
4. Step 4: Simplify right side
   108,100.71x = 10,772,678,568.78
5. Step 5: Solve for x
   x = 10,772,678,568.78/108,100.71
6. Step 6: Final answer
   x = 99,654.10