Finding the Fourth Proportional to 78,223.91, 117,345.04 and 28,327.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,223.91 : 117,345.04 = 28,327.55 : x
2. Step 2: Convert to fraction form
   78,223.91/117,345.04 = 28,327.55/x
3. Step 3: Cross multiply
   78,223.91x = 117,345.04 × 28,327.55
4. Step 4: Simplify right side
   78,223.91x = 3,324,096,830.31
5. Step 5: Solve for x
   x = 3,324,096,830.31/78,223.91
6. Step 6: Final answer
   x = 42,494.64