Finding the Fourth Proportional to 113,441.05, 170,156.40 and 42,358.15

Step by Step Solution

1. Step 1: Write the proportion equation
   113,441.05 : 170,156.40 = 42,358.15 : x
2. Step 2: Convert to fraction form
   113,441.05/170,156.40 = 42,358.15/x
3. Step 3: Cross multiply
   113,441.05x = 170,156.40 × 42,358.15
4. Step 4: Simplify right side
   113,441.05x = 7,207,510,314.66
5. Step 5: Solve for x
   x = 7,207,510,314.66/113,441.05
6. Step 6: Final answer
   x = 63,535.29