Finding the Fourth Proportional to 111,978.54, 154,530.37 and 61,677.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.54 : 154,530.37 = 61,677.54 : x
2. Step 2: Convert to fraction form
   111,978.54/154,530.37 = 61,677.54/x
3. Step 3: Cross multiply
   111,978.54x = 154,530.37 × 61,677.54
4. Step 4: Simplify right side
   111,978.54x = 9,531,053,076.89
5. Step 5: Solve for x
   x = 9,531,053,076.89/111,978.54
6. Step 6: Final answer
   x = 85,115.00