Finding the Fourth Proportional to 108,132, 149,215.98 and 64,573.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,132 : 149,215.98 = 64,573.72 : x
2. Step 2: Convert to fraction form
   108,132/149,215.98 = 64,573.72/x
3. Step 3: Cross multiply
   108,132x = 149,215.98 × 64,573.72
4. Step 4: Simplify right side
   108,132x = 9,635,430,912.05
5. Step 5: Solve for x
   x = 9,635,430,912.05/108,132
6. Step 6: Final answer
   x = 89,108.04