Finding the Fourth Proportional to 81,606.27, 122,310.95 and 42,141.81

Step by Step Solution

1. Step 1: Write the proportion equation
   81,606.27 : 122,310.95 = 42,141.81 : x
2. Step 2: Convert to fraction form
   81,606.27/122,310.95 = 42,141.81/x
3. Step 3: Cross multiply
   81,606.27x = 122,310.95 × 42,141.81
4. Step 4: Simplify right side
   81,606.27x = 5,154,404,605.11
5. Step 5: Solve for x
   x = 5,154,404,605.11/81,606.27
6. Step 6: Final answer
   x = 63,161.87