Finding the Fourth Proportional to 78,799.50, 108,728.46 and 46,971.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,799.50 : 108,728.46 = 46,971.36 : x
2. Step 2: Convert to fraction form
   78,799.50/108,728.46 = 46,971.36/x
3. Step 3: Cross multiply
   78,799.50x = 108,728.46 × 46,971.36
4. Step 4: Simplify right side
   78,799.50x = 5,107,123,636.91
5. Step 5: Solve for x
   x = 5,107,123,636.91/78,799.50
6. Step 6: Final answer
   x = 64,811.62