Finding the Fourth Proportional to 123,563.00, 170,535.15 and 78,245.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,563.00 : 170,535.15 = 78,245.12 : x
2. Step 2: Convert to fraction form
   123,563.00/170,535.15 = 78,245.12/x
3. Step 3: Cross multiply
   123,563.00x = 170,535.15 × 78,245.12
4. Step 4: Simplify right side
   123,563.00x = 13,343,542,423.29
5. Step 5: Solve for x
   x = 13,343,542,423.29/123,563.00
6. Step 6: Final answer
   x = 107,989.79