Finding the Fourth Proportional to 109,315.17, 150,892.67 and 64,007.72

Step by Step Solution

1. Step 1: Write the proportion equation
   109,315.17 : 150,892.67 = 64,007.72 : x
2. Step 2: Convert to fraction form
   109,315.17/150,892.67 = 64,007.72/x
3. Step 3: Cross multiply
   109,315.17x = 150,892.67 × 64,007.72
4. Step 4: Simplify right side
   109,315.17x = 9,658,295,742.82
5. Step 5: Solve for x
   x = 9,658,295,742.82/109,315.17
6. Step 6: Final answer
   x = 88,352.75