Finding the Fourth Proportional to 111,791.18, 154,268.61 and 61,490.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,791.18 : 154,268.61 = 61,490.18 : x
2. Step 2: Convert to fraction form
   111,791.18/154,268.61 = 61,490.18/x
3. Step 3: Cross multiply
   111,791.18x = 154,268.61 × 61,490.18
4. Step 4: Simplify right side
   111,791.18x = 9,486,004,597.25
5. Step 5: Solve for x
   x = 9,486,004,597.25/111,791.18
6. Step 6: Final answer
   x = 84,854.68