Finding the Fourth Proportional to 109,871.39, 151,644.61 and 64,564.04

Step by Step Solution

1. Step 1: Write the proportion equation
   109,871.39 : 151,644.61 = 64,564.04 : x
2. Step 2: Convert to fraction form
   109,871.39/151,644.61 = 64,564.04/x
3. Step 3: Cross multiply
   109,871.39x = 151,644.61 × 64,564.04
4. Step 4: Simplify right side
   109,871.39x = 9,790,787,909.47
5. Step 5: Solve for x
   x = 9,790,787,909.47/109,871.39
6. Step 6: Final answer
   x = 89,111.35