Finding the Fourth Proportional to 112,256.78, 154,913.60 and 61,955.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,256.78 : 154,913.60 = 61,955.78 : x
2. Step 2: Convert to fraction form
   112,256.78/154,913.60 = 61,955.78/x
3. Step 3: Cross multiply
   112,256.78x = 154,913.60 × 61,955.78
4. Step 4: Simplify right side
   112,256.78x = 9,597,792,610.83
5. Step 5: Solve for x
   x = 9,597,792,610.83/112,256.78
6. Step 6: Final answer
   x = 85,498.56