Finding the Fourth Proportional to 78,789.31, 118,184.99 and 26,198.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,789.31 : 118,184.99 = 26,198.79 : x
2. Step 2: Convert to fraction form
   78,789.31/118,184.99 = 26,198.79/x
3. Step 3: Cross multiply
   78,789.31x = 118,184.99 × 26,198.79
4. Step 4: Simplify right side
   78,789.31x = 3,096,303,603.17
5. Step 5: Solve for x
   x = 3,096,303,603.17/78,789.31
6. Step 6: Final answer
   x = 39,298.52