Finding the Fourth Proportional to 111,871.32, 154,382.42 and 61,570.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111,871.32 : 154,382.42 = 61,570.32 : x
2. Step 2: Convert to fraction form
   111,871.32/154,382.42 = 61,570.32/x
3. Step 3: Cross multiply
   111,871.32x = 154,382.42 × 61,570.32
4. Step 4: Simplify right side
   111,871.32x = 9,505,375,001.77
5. Step 5: Solve for x
   x = 9,505,375,001.77/111,871.32
6. Step 6: Final answer
   x = 84,967.04