Finding the Fourth Proportional to 81,888.72, 113,005.12 and 46,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,888.72 : 113,005.12 = 46,078.72 : x
2. Step 2: Convert to fraction form
   81,888.72/113,005.12 = 46,078.72/x
3. Step 3: Cross multiply
   81,888.72x = 113,005.12 × 46,078.72
4. Step 4: Simplify right side
   81,888.72x = 5,207,131,283.05
5. Step 5: Solve for x
   x = 5,207,131,283.05/81,888.72
6. Step 6: Final answer
   x = 63,587.89