Finding the Fourth Proportional to 113,458.39, 170,188.43 and 42,397.09

Step by Step Solution

1. Step 1: Write the proportion equation
   113,458.39 : 170,188.43 = 42,397.09 : x
2. Step 2: Convert to fraction form
   113,458.39/170,188.43 = 42,397.09/x
3. Step 3: Cross multiply
   113,458.39x = 170,188.43 × 42,397.09
4. Step 4: Simplify right side
   113,458.39x = 7,215,493,546.21
5. Step 5: Solve for x
   x = 7,215,493,546.21/113,458.39
6. Step 6: Final answer
   x = 63,595.95