Finding the Fourth Proportional to 78,426.89, 117,630.61 and 46,425

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426.89 : 117,630.61 = 46,425 : x
2. Step 2: Convert to fraction form
   78,426.89/117,630.61 = 46,425/x
3. Step 3: Cross multiply
   78,426.89x = 117,630.61 × 46,425
4. Step 4: Simplify right side
   78,426.89x = 5,461,000,953.19
5. Step 5: Solve for x
   x = 5,461,000,953.19/78,426.89
6. Step 6: Final answer
   x = 69,631.75