Finding the Fourth Proportional to 111,520.12, 153,846.43 and 71,213.71

Step by Step Solution

1. Step 1: Write the proportion equation
   111,520.12 : 153,846.43 = 71,213.71 : x
2. Step 2: Convert to fraction form
   111,520.12/153,846.43 = 71,213.71/x
3. Step 3: Cross multiply
   111,520.12x = 153,846.43 × 71,213.71
4. Step 4: Simplify right side
   111,520.12x = 10,955,975,050.56
5. Step 5: Solve for x
   x = 10,955,975,050.56/111,520.12
6. Step 6: Final answer
   x = 98,242.14