Finding the Fourth Proportional to 108,103.14, 149,139.36 and 72,236.34

Step by Step Solution

1. Step 1: Write the proportion equation
   108,103.14 : 149,139.36 = 72,236.34 : x
2. Step 2: Convert to fraction form
   108,103.14/149,139.36 = 72,236.34/x
3. Step 3: Cross multiply
   108,103.14x = 149,139.36 × 72,236.34
4. Step 4: Simplify right side
   108,103.14x = 10,773,281,516.34
5. Step 5: Solve for x
   x = 10,773,281,516.34/108,103.14
6. Step 6: Final answer
   x = 99,657.43