Finding the Fourth Proportional to 73,976.72, 102,087.96 and 40,442.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,976.72 : 102,087.96 = 40,442.72 : x
2. Step 2: Convert to fraction form
   73,976.72/102,087.96 = 40,442.72/x
3. Step 3: Cross multiply
   73,976.72x = 102,087.96 × 40,442.72
4. Step 4: Simplify right side
   73,976.72x = 4,128,714,781.65
5. Step 5: Solve for x
   x = 4,128,714,781.65/73,976.72
6. Step 6: Final answer
   x = 55,811.00