Finding the Fourth Proportional to 119,072.82, 164,328.72 and 78,716.61

Step by Step Solution

1. Step 1: Write the proportion equation
   119,072.82 : 164,328.72 = 78,716.61 : x
2. Step 2: Convert to fraction form
   119,072.82/164,328.72 = 78,716.61/x
3. Step 3: Cross multiply
   119,072.82x = 164,328.72 × 78,716.61
4. Step 4: Simplify right side
   119,072.82x = 12,935,399,764.04
5. Step 5: Solve for x
   x = 12,935,399,764.04/119,072.82
6. Step 6: Final answer
   x = 108,634.36