Finding the Fourth Proportional to 119,215.56, 164,589.72 and 78,963.82

Step by Step Solution

1. Step 1: Write the proportion equation
   119,215.56 : 164,589.72 = 78,963.82 : x
2. Step 2: Convert to fraction form
   119,215.56/164,589.72 = 78,963.82/x
3. Step 3: Cross multiply
   119,215.56x = 164,589.72 × 78,963.82
4. Step 4: Simplify right side
   119,215.56x = 12,996,633,023.93
5. Step 5: Solve for x
   x = 12,996,633,023.93/119,215.56
6. Step 6: Final answer
   x = 109,017.93