Finding the Fourth Proportional to 78,326.89, 117,492.61 and 19,162.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,326.89 : 117,492.61 = 19,162.54 : x
2. Step 2: Convert to fraction form
   78,326.89/117,492.61 = 19,162.54/x
3. Step 3: Cross multiply
   78,326.89x = 117,492.61 × 19,162.54
4. Step 4: Simplify right side
   78,326.89x = 2,251,456,838.83
5. Step 5: Solve for x
   x = 2,251,456,838.83/78,326.89
6. Step 6: Final answer
   x = 28,744.37