Finding the Fourth Proportional to 111,790.78, 154,293.18 and 64,076.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,790.78 : 154,293.18 = 64,076.10 : x
2. Step 2: Convert to fraction form
   111,790.78/154,293.18 = 64,076.10/x
3. Step 3: Cross multiply
   111,790.78x = 154,293.18 × 64,076.10
4. Step 4: Simplify right side
   111,790.78x = 9,886,505,231.00
5. Step 5: Solve for x
   x = 9,886,505,231.00/111,790.78
6. Step 6: Final answer
   x = 88,437.57