Finding the Fourth Proportional to 111,906.36, 154,430.82 and 61,605

Step by Step Solution

1. Step 1: Write the proportion equation
   111,906.36 : 154,430.82 = 61,605 : x
2. Step 2: Convert to fraction form
   111,906.36/154,430.82 = 61,605/x
3. Step 3: Cross multiply
   111,906.36x = 154,430.82 × 61,605
4. Step 4: Simplify right side
   111,906.36x = 9,513,710,666.10
5. Step 5: Solve for x
   x = 9,513,710,666.10/111,906.36
6. Step 6: Final answer
   x = 85,014.92