Finding the Fourth Proportional to 81,256.72, 112,134.64 and 45,446.73

Step by Step Solution

1. Step 1: Write the proportion equation
   81,256.72 : 112,134.64 = 45,446.73 : x
2. Step 2: Convert to fraction form
   81,256.72/112,134.64 = 45,446.73/x
3. Step 3: Cross multiply
   81,256.72x = 112,134.64 × 45,446.73
4. Step 4: Simplify right side
   81,256.72x = 5,096,152,707.73
5. Step 5: Solve for x
   x = 5,096,152,707.73/81,256.72
6. Step 6: Final answer
   x = 62,716.69