Finding the Fourth Proportional to 111,857.50, 154,363.63 and 60,870.21

Step by Step Solution

1. Step 1: Write the proportion equation
   111,857.50 : 154,363.63 = 60,870.21 : x
2. Step 2: Convert to fraction form
   111,857.50/154,363.63 = 60,870.21/x
3. Step 3: Cross multiply
   111,857.50x = 154,363.63 × 60,870.21
4. Step 4: Simplify right side
   111,857.50x = 9,396,146,574.46
5. Step 5: Solve for x
   x = 9,396,146,574.46/111,857.50
6. Step 6: Final answer
   x = 84,001.04