Finding the Fourth Proportional to 113,870.25, 170,909.53 and 57,749.09

Step by Step Solution

1. Step 1: Write the proportion equation
   113,870.25 : 170,909.53 = 57,749.09 : x
2. Step 2: Convert to fraction form
   113,870.25/170,909.53 = 57,749.09/x
3. Step 3: Cross multiply
   113,870.25x = 170,909.53 × 57,749.09
4. Step 4: Simplify right side
   113,870.25x = 9,869,868,830.91
5. Step 5: Solve for x
   x = 9,869,868,830.91/113,870.25
6. Step 6: Final answer
   x = 86,676.45