Finding the Fourth Proportional to 78,594.15, 117,820.13 and 28,662.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,594.15 : 117,820.13 = 28,662.55 : x
2. Step 2: Convert to fraction form
   78,594.15/117,820.13 = 28,662.55/x
3. Step 3: Cross multiply
   78,594.15x = 117,820.13 × 28,662.55
4. Step 4: Simplify right side
   78,594.15x = 3,377,025,036.75
5. Step 5: Solve for x
   x = 3,377,025,036.75/78,594.15
6. Step 6: Final answer
   x = 42,967.89