Finding the Fourth Proportional to 108,496.49, 149,742.88 and 64,886.18

Step by Step Solution

1. Step 1: Write the proportion equation
   108,496.49 : 149,742.88 = 64,886.18 : x
2. Step 2: Convert to fraction form
   108,496.49/149,742.88 = 64,886.18/x
3. Step 3: Cross multiply
   108,496.49x = 149,742.88 × 64,886.18
4. Step 4: Simplify right side
   108,496.49x = 9,716,242,554.47
5. Step 5: Solve for x
   x = 9,716,242,554.47/108,496.49
6. Step 6: Final answer
   x = 89,553.52