Finding the Fourth Proportional to 108,100.60, 149,135.94 and 72,233.80

Step by Step Solution

1. Step 1: Write the proportion equation
   108,100.60 : 149,135.94 = 72,233.80 : x
2. Step 2: Convert to fraction form
   108,100.60/149,135.94 = 72,233.80/x
3. Step 3: Cross multiply
   108,100.60x = 149,135.94 × 72,233.80
4. Step 4: Simplify right side
   108,100.60x = 10,772,655,662.77
5. Step 5: Solve for x
   x = 10,772,655,662.77/108,100.60
6. Step 6: Final answer
   x = 99,653.99