Finding the Fourth Proportional to 81,457.98, 122,111.24 and 31,570.62

Step by Step Solution

1. Step 1: Write the proportion equation
   81,457.98 : 122,111.24 = 31,570.62 : x
2. Step 2: Convert to fraction form
   81,457.98/122,111.24 = 31,570.62/x
3. Step 3: Cross multiply
   81,457.98x = 122,111.24 × 31,570.62
4. Step 4: Simplify right side
   81,457.98x = 3,855,127,397.92
5. Step 5: Solve for x
   x = 3,855,127,397.92/81,457.98
6. Step 6: Final answer
   x = 47,326.58