Finding the Fourth Proportional to 111,553.77, 153,899.69 and 71,257.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,553.77 : 153,899.69 = 71,257.08 : x
2. Step 2: Convert to fraction form
   111,553.77/153,899.69 = 71,257.08/x
3. Step 3: Cross multiply
   111,553.77x = 153,899.69 × 71,257.08
4. Step 4: Simplify right side
   111,553.77x = 10,966,442,166.02
5. Step 5: Solve for x
   x = 10,966,442,166.02/111,553.77
6. Step 6: Final answer
   x = 98,306.33