Finding the Fourth Proportional to 81,405.30, 122,168.70 and 41,942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,405.30 : 122,168.70 = 41,942.10 : x
2. Step 2: Convert to fraction form
   81,405.30/122,168.70 = 41,942.10/x
3. Step 3: Cross multiply
   81,405.30x = 122,168.70 × 41,942.10
4. Step 4: Simplify right side
   81,405.30x = 5,124,011,832.27
5. Step 5: Solve for x
   x = 5,124,011,832.27/81,405.30
6. Step 6: Final answer
   x = 62,944.45