Finding the Fourth Proportional to 109,056.16, 150,404.20 and 75,118.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,056.16 : 150,404.20 = 75,118.78 : x
2. Step 2: Convert to fraction form
   109,056.16/150,404.20 = 75,118.78/x
3. Step 3: Cross multiply
   109,056.16x = 150,404.20 × 75,118.78
4. Step 4: Simplify right side
   109,056.16x = 11,298,180,010.88
5. Step 5: Solve for x
   x = 11,298,180,010.88/109,056.16
6. Step 6: Final answer
   x = 103,599.65