Finding the Fourth Proportional to 119,067.57, 164,321.46 and 78,711.35

Step by Step Solution

1. Step 1: Write the proportion equation
   119,067.57 : 164,321.46 = 78,711.35 : x
2. Step 2: Convert to fraction form
   119,067.57/164,321.46 = 78,711.35/x
3. Step 3: Cross multiply
   119,067.57x = 164,321.46 × 78,711.35
4. Step 4: Simplify right side
   119,067.57x = 12,933,963,128.96
5. Step 5: Solve for x
   x = 12,933,963,128.96/119,067.57
6. Step 6: Final answer
   x = 108,627.09