Finding the Fourth Proportional to 78,425.57, 117,628.64 and 46,423.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,425.57 : 117,628.64 = 46,423.69 : x
2. Step 2: Convert to fraction form
   78,425.57/117,628.64 = 46,423.69/x
3. Step 3: Cross multiply
   78,425.57x = 117,628.64 × 46,423.69
4. Step 4: Simplify right side
   78,425.57x = 5,460,755,166.38
5. Step 5: Solve for x
   x = 5,460,755,166.38/78,425.57
6. Step 6: Final answer
   x = 69,629.78