Finding the Fourth Proportional to 111,707.36, 154,156.56 and 61,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,707.36 : 154,156.56 = 61,406.72 : x
2. Step 2: Convert to fraction form
   111,707.36/154,156.56 = 61,406.72/x
3. Step 3: Cross multiply
   111,707.36x = 154,156.56 × 61,406.72
4. Step 4: Simplify right side
   111,707.36x = 9,466,248,716.08
5. Step 5: Solve for x
   x = 9,466,248,716.08/111,707.36
6. Step 6: Final answer
   x = 84,741.50