Finding the Fourth Proportional to 111,589.59, 153,936.46 and 71,260.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,589.59 : 153,936.46 = 71,260.86 : x
2. Step 2: Convert to fraction form
   111,589.59/153,936.46 = 71,260.86/x
3. Step 3: Cross multiply
   111,589.59x = 153,936.46 × 71,260.86
4. Step 4: Simplify right side
   111,589.59x = 10,969,645,191.29
5. Step 5: Solve for x
   x = 10,969,645,191.29/111,589.59
6. Step 6: Final answer
   x = 98,303.48