Finding the Fourth Proportional to 108,259.75, 149,401.16 and 60,521.05

Step by Step Solution

1. Step 1: Write the proportion equation
   108,259.75 : 149,401.16 = 60,521.05 : x
2. Step 2: Convert to fraction form
   108,259.75/149,401.16 = 60,521.05/x
3. Step 3: Cross multiply
   108,259.75x = 149,401.16 × 60,521.05
4. Step 4: Simplify right side
   108,259.75x = 9,041,915,074.42
5. Step 5: Solve for x
   x = 9,041,915,074.42/108,259.75
6. Step 6: Final answer
   x = 83,520.56