Finding the Fourth Proportional to 108,540.10, 162,810.15 and 77,047.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,540.10 : 162,810.15 = 77,047.30 : x
2. Step 2: Convert to fraction form
   108,540.10/162,810.15 = 77,047.30/x
3. Step 3: Cross multiply
   108,540.10x = 162,810.15 × 77,047.30
4. Step 4: Simplify right side
   108,540.10x = 12,544,082,470.10
5. Step 5: Solve for x
   x = 12,544,082,470.10/108,540.10
6. Step 6: Final answer
   x = 115,570.95