Finding the Fourth Proportional to 111,878.71, 154,384.02 and 71,039.83

Step by Step Solution

1. Step 1: Write the proportion equation
   111,878.71 : 154,384.02 = 71,039.83 : x
2. Step 2: Convert to fraction form
   111,878.71/154,384.02 = 71,039.83/x
3. Step 3: Cross multiply
   111,878.71x = 154,384.02 × 71,039.83
4. Step 4: Simplify right side
   111,878.71x = 10,967,414,149.56
5. Step 5: Solve for x
   x = 10,967,414,149.56/111,878.71
6. Step 6: Final answer
   x = 98,029.50