Finding the Fourth Proportional to 113,446.71, 170,131.77 and 42,354.63

Step by Step Solution

1. Step 1: Write the proportion equation
   113,446.71 : 170,131.77 = 42,354.63 : x
2. Step 2: Convert to fraction form
   113,446.71/170,131.77 = 42,354.63/x
3. Step 3: Cross multiply
   113,446.71x = 170,131.77 × 42,354.63
4. Step 4: Simplify right side
   113,446.71x = 7,205,868,169.60
5. Step 5: Solve for x
   x = 7,205,868,169.60/113,446.71
6. Step 6: Final answer
   x = 63,517.65