Finding the Fourth Proportional to 64,196.56, 88,563.39 and 38,688.43

Step by Step Solution

1. Step 1: Write the proportion equation
   64,196.56 : 88,563.39 = 38,688.43 : x
2. Step 2: Convert to fraction form
   64,196.56/88,563.39 = 38,688.43/x
3. Step 3: Cross multiply
   64,196.56x = 88,563.39 × 38,688.43
4. Step 4: Simplify right side
   64,196.56x = 3,426,378,514.58
5. Step 5: Solve for x
   x = 3,426,378,514.58/64,196.56
6. Step 6: Final answer
   x = 53,373.24