Finding the Fourth Proportional to 81,788.36, 112,868.42 and 45,978.06

Step by Step Solution

1. Step 1: Write the proportion equation
   81,788.36 : 112,868.42 = 45,978.06 : x
2. Step 2: Convert to fraction form
   81,788.36/112,868.42 = 45,978.06/x
3. Step 3: Cross multiply
   81,788.36x = 112,868.42 × 45,978.06
4. Step 4: Simplify right side
   81,788.36x = 5,189,470,756.97
5. Step 5: Solve for x
   x = 5,189,470,756.97/81,788.36
6. Step 6: Final answer
   x = 63,450.00