Finding the Fourth Proportional to 144,119.69, 216,310.72 and 76,708.32

Step by Step Solution

1. Step 1: Write the proportion equation
   144,119.69 : 216,310.72 = 76,708.32 : x
2. Step 2: Convert to fraction form
   144,119.69/216,310.72 = 76,708.32/x
3. Step 3: Cross multiply
   144,119.69x = 216,310.72 × 76,708.32
4. Step 4: Simplify right side
   144,119.69x = 16,592,830,926.25
5. Step 5: Solve for x
   x = 16,592,830,926.25/144,119.69
6. Step 6: Final answer
   x = 115,132.30