Finding the Fourth Proportional to 81,172.05, 112,019.83 and 45,362.16

Step by Step Solution

1. Step 1: Write the proportion equation
   81,172.05 : 112,019.83 = 45,362.16 : x
2. Step 2: Convert to fraction form
   81,172.05/112,019.83 = 45,362.16/x
3. Step 3: Cross multiply
   81,172.05x = 112,019.83 × 45,362.16
4. Step 4: Simplify right side
   81,172.05x = 5,081,461,451.63
5. Step 5: Solve for x
   x = 5,081,461,451.63/81,172.05
6. Step 6: Final answer
   x = 62,601.12