Finding the Fourth Proportional to 111,705.36, 154,153.80 and 61,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,705.36 : 154,153.80 = 61,404.72 : x
2. Step 2: Convert to fraction form
   111,705.36/154,153.80 = 61,404.72/x
3. Step 3: Cross multiply
   111,705.36x = 154,153.80 × 61,404.72
4. Step 4: Simplify right side
   111,705.36x = 9,465,770,925.94
5. Step 5: Solve for x
   x = 9,465,770,925.94/111,705.36
6. Step 6: Final answer
   x = 84,738.74