Finding the Fourth Proportional to 275,509.98, 413,333.61 and 78,517.98

Step by Step Solution

1. Step 1: Write the proportion equation
   275,509.98 : 413,333.61 = 78,517.98 : x
2. Step 2: Convert to fraction form
   275,509.98/413,333.61 = 78,517.98/x
3. Step 3: Cross multiply
   275,509.98x = 413,333.61 × 78,517.98
4. Step 4: Simplify right side
   275,509.98x = 32,454,120,123.31
5. Step 5: Solve for x
   x = 32,454,120,123.31/275,509.98
6. Step 6: Final answer
   x = 117,796.53