Finding the Fourth Proportional to 108,998.02, 150,418.26 and 65,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,998.02 : 150,418.26 = 65,978.50 : x
2. Step 2: Convert to fraction form
   108,998.02/150,418.26 = 65,978.50/x
3. Step 3: Cross multiply
   108,998.02x = 150,418.26 × 65,978.50
4. Step 4: Simplify right side
   108,998.02x = 9,924,371,167.41
5. Step 5: Solve for x
   x = 9,924,371,167.41/108,998.02
6. Step 6: Final answer
   x = 91,050.93