Finding the Fourth Proportional to 111,665.32, 154,101.06 and 61,365.64

Step by Step Solution

1. Step 1: Write the proportion equation
   111,665.32 : 154,101.06 = 61,365.64 : x
2. Step 2: Convert to fraction form
   111,665.32/154,101.06 = 61,365.64/x
3. Step 3: Cross multiply
   111,665.32x = 154,101.06 × 61,365.64
4. Step 4: Simplify right side
   111,665.32x = 9,456,510,171.58
5. Step 5: Solve for x
   x = 9,456,510,171.58/111,665.32
6. Step 6: Final answer
   x = 84,686.19