Finding the Fourth Proportional to 113,878.80, 170,922.72 and 57,757.98

Step by Step Solution

1. Step 1: Write the proportion equation
   113,878.80 : 170,922.72 = 57,757.98 : x
2. Step 2: Convert to fraction form
   113,878.80/170,922.72 = 57,757.98/x
3. Step 3: Cross multiply
   113,878.80x = 170,922.72 × 57,757.98
4. Step 4: Simplify right side
   113,878.80x = 9,872,151,043.31
5. Step 5: Solve for x
   x = 9,872,151,043.31/113,878.80
6. Step 6: Final answer
   x = 86,689.98