Finding the Fourth Proportional to 111,911.10, 168,061.05 and 59,423.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,911.10 : 168,061.05 = 59,423.10 : x
2. Step 2: Convert to fraction form
   111,911.10/168,061.05 = 59,423.10/x
3. Step 3: Cross multiply
   111,911.10x = 168,061.05 × 59,423.10
4. Step 4: Simplify right side
   111,911.10x = 9,986,708,580.26
5. Step 5: Solve for x
   x = 9,986,708,580.26/111,911.10
6. Step 6: Final answer
   x = 89,237.87