Finding the Fourth Proportional to 78,707.56, 118,062.78 and 28,787.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,707.56 : 118,062.78 = 28,787.62 : x
2. Step 2: Convert to fraction form
   78,707.56/118,062.78 = 28,787.62/x
3. Step 3: Cross multiply
   78,707.56x = 118,062.78 × 28,787.62
4. Step 4: Simplify right side
   78,707.56x = 3,398,746,446.78
5. Step 5: Solve for x
   x = 3,398,746,446.78/78,707.56
6. Step 6: Final answer
   x = 43,181.96