Finding the Fourth Proportional to 109,435.72, 150,995.58 and 66,414.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109,435.72 : 150,995.58 = 66,414.25 : x
2. Step 2: Convert to fraction form
   109,435.72/150,995.58 = 66,414.25/x
3. Step 3: Cross multiply
   109,435.72x = 150,995.58 × 66,414.25
4. Step 4: Simplify right side
   109,435.72x = 10,028,258,199.02
5. Step 5: Solve for x
   x = 10,028,258,199.02/109,435.72
6. Step 6: Final answer
   x = 91,636.06