Finding the Fourth Proportional to 117,815.30, 164,591.50 and 117,815.30

Step by Step Solution

1. Step 1: Write the proportion equation
   117,815.30 : 164,591.50 = 117,815.30 : x
2. Step 2: Convert to fraction form
   117,815.30/164,591.50 = 117,815.30/x
3. Step 3: Cross multiply
   117,815.30x = 164,591.50 × 117,815.30
4. Step 4: Simplify right side
   117,815.30x = 19,391,396,949.95
5. Step 5: Solve for x
   x = 19,391,396,949.95/117,815.30
6. Step 6: Final answer
   x = 164,591.50