Finding the Fourth Proportional to 117,920.50, 162,729.24 and 64,205.38

Step by Step Solution

1. Step 1: Write the proportion equation
   117,920.50 : 162,729.24 = 64,205.38 : x
2. Step 2: Convert to fraction form
   117,920.50/162,729.24 = 64,205.38/x
3. Step 3: Cross multiply
   117,920.50x = 162,729.24 × 64,205.38
4. Step 4: Simplify right side
   117,920.50x = 10,448,092,691.31
5. Step 5: Solve for x
   x = 10,448,092,691.31/117,920.50
6. Step 6: Final answer
   x = 88,602.85