Finding the Fourth Proportional to 109,639.10, 151,300.82 and 64,308.40

Step by Step Solution

1. Step 1: Write the proportion equation
   109,639.10 : 151,300.82 = 64,308.40 : x
2. Step 2: Convert to fraction form
   109,639.10/151,300.82 = 64,308.40/x
3. Step 3: Cross multiply
   109,639.10x = 151,300.82 × 64,308.40
4. Step 4: Simplify right side
   109,639.10x = 9,729,913,652.89
5. Step 5: Solve for x
   x = 9,729,913,652.89/109,639.10
6. Step 6: Final answer
   x = 88,744.92