Finding the Fourth Proportional to 144,128.32, 216,325.37 and 73,100.80

Step by Step Solution

1. Step 1: Write the proportion equation
   144,128.32 : 216,325.37 = 73,100.80 : x
2. Step 2: Convert to fraction form
   144,128.32/216,325.37 = 73,100.80/x
3. Step 3: Cross multiply
   144,128.32x = 216,325.37 × 73,100.80
4. Step 4: Simplify right side
   144,128.32x = 15,813,557,607.30
5. Step 5: Solve for x
   x = 15,813,557,607.30/144,128.32
6. Step 6: Final answer
   x = 109,718.60