Finding the Fourth Proportional to 81,575.67, 112,572.71 and 45,275

Step by Step Solution

1. Step 1: Write the proportion equation
   81,575.67 : 112,572.71 = 45,275 : x
2. Step 2: Convert to fraction form
   81,575.67/112,572.71 = 45,275/x
3. Step 3: Cross multiply
   81,575.67x = 112,572.71 × 45,275
4. Step 4: Simplify right side
   81,575.67x = 5,096,729,445.25
5. Step 5: Solve for x
   x = 5,096,729,445.25/81,575.67
6. Step 6: Final answer
   x = 62,478.55