Finding the Fourth Proportional to 81,673.71, 112,715.31 and 45,379.53

Step by Step Solution

1. Step 1: Write the proportion equation
   81,673.71 : 112,715.31 = 45,379.53 : x
2. Step 2: Convert to fraction form
   81,673.71/112,715.31 = 45,379.53/x
3. Step 3: Cross multiply
   81,673.71x = 112,715.31 × 45,379.53
4. Step 4: Simplify right side
   81,673.71x = 5,114,967,961.78
5. Step 5: Solve for x
   x = 5,114,967,961.78/81,673.71
6. Step 6: Final answer
   x = 62,626.86