Finding the Fourth Proportional to 116,929.24, 161,256.45 and 76,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,929.24 : 161,256.45 = 76,628.50 : x
2. Step 2: Convert to fraction form
   116,929.24/161,256.45 = 76,628.50/x
3. Step 3: Cross multiply
   116,929.24x = 161,256.45 × 76,628.50
4. Step 4: Simplify right side
   116,929.24x = 12,356,839,878.83
5. Step 5: Solve for x
   x = 12,356,839,878.83/116,929.24
6. Step 6: Final answer
   x = 105,677.93