Finding the Fourth Proportional to 111,707.60, 154,154.72 and 61,405.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111,707.60 : 154,154.72 = 61,405.52 : x
2. Step 2: Convert to fraction form
   111,707.60/154,154.72 = 61,405.52/x
3. Step 3: Cross multiply
   111,707.60x = 154,154.72 × 61,405.52
4. Step 4: Simplify right side
   111,707.60x = 9,465,950,742.05
5. Step 5: Solve for x
   x = 9,465,950,742.05/111,707.60
6. Step 6: Final answer
   x = 84,738.65