Finding the Fourth Proportional to 162,046.71, 243,157.55 and 78,940.71

Step by Step Solution

1. Step 1: Write the proportion equation
   162,046.71 : 243,157.55 = 78,940.71 : x
2. Step 2: Convert to fraction form
   162,046.71/243,157.55 = 78,940.71/x
3. Step 3: Cross multiply
   162,046.71x = 243,157.55 × 78,940.71
4. Step 4: Simplify right side
   162,046.71x = 19,195,029,244.16
5. Step 5: Solve for x
   x = 19,195,029,244.16/162,046.71
6. Step 6: Final answer
   x = 118,453.68