Finding the Fourth Proportional to 144,496.45, 216,746.27 and 64,538.49

Step by Step Solution

1. Step 1: Write the proportion equation
   144,496.45 : 216,746.27 = 64,538.49 : x
2. Step 2: Convert to fraction form
   144,496.45/216,746.27 = 64,538.49/x
3. Step 3: Cross multiply
   144,496.45x = 216,746.27 × 64,538.49
4. Step 4: Simplify right side
   144,496.45x = 13,988,476,978.93
5. Step 5: Solve for x
   x = 13,988,476,978.93/144,496.45
6. Step 6: Final answer
   x = 96,808.45