Finding the Fourth Proportional to 81,522.72, 122,263.56 and 31,585.68

Step by Step Solution

1. Step 1: Write the proportion equation
   81,522.72 : 122,263.56 = 31,585.68 : x
2. Step 2: Convert to fraction form
   81,522.72/122,263.56 = 31,585.68/x
3. Step 3: Cross multiply
   81,522.72x = 122,263.56 × 31,585.68
4. Step 4: Simplify right side
   81,522.72x = 3,861,777,681.82
5. Step 5: Solve for x
   x = 3,861,777,681.82/81,522.72
6. Step 6: Final answer
   x = 47,370.57