Finding the Fourth Proportional to 108,698.99, 150,006.15 and 65,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,698.99 : 150,006.15 = 65,672.50 : x
2. Step 2: Convert to fraction form
   108,698.99/150,006.15 = 65,672.50/x
3. Step 3: Cross multiply
   108,698.99x = 150,006.15 × 65,672.50
4. Step 4: Simplify right side
   108,698.99x = 9,851,278,554.93
5. Step 5: Solve for x
   x = 9,851,278,554.93/108,698.99
6. Step 6: Final answer
   x = 90,628.98