Finding the Fourth Proportional to 140,103.30, 210,009.15 and 76,826.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,103.30 : 210,009.15 = 76,826.10 : x
2. Step 2: Convert to fraction form
   140,103.30/210,009.15 = 76,826.10/x
3. Step 3: Cross multiply
   140,103.30x = 210,009.15 × 76,826.10
4. Step 4: Simplify right side
   140,103.30x = 16,134,183,958.82
5. Step 5: Solve for x
   x = 16,134,183,958.82/140,103.30
6. Step 6: Final answer
   x = 115,159.20