Finding the Fourth Proportional to 64,196.64, 88,554.24 and 38,685.60

Step by Step Solution

1. Step 1: Write the proportion equation
   64,196.64 : 88,554.24 = 38,685.60 : x
2. Step 2: Convert to fraction form
   64,196.64/88,554.24 = 38,685.60/x
3. Step 3: Cross multiply
   64,196.64x = 88,554.24 × 38,685.60
4. Step 4: Simplify right side
   64,196.64x = 3,425,773,906.94
5. Step 5: Solve for x
   x = 3,425,773,906.94/64,196.64
6. Step 6: Final answer
   x = 53,363.76