Finding the Fourth Proportional to 72,799.59, 109,121.62 and 51,959.91

Step by Step Solution

1. Step 1: Write the proportion equation
   72,799.59 : 109,121.62 = 51,959.91 : x
2. Step 2: Convert to fraction form
   72,799.59/109,121.62 = 51,959.91/x
3. Step 3: Cross multiply
   72,799.59x = 109,121.62 × 51,959.91
4. Step 4: Simplify right side
   72,799.59x = 5,669,949,554.25
5. Step 5: Solve for x
   x = 5,669,949,554.25/72,799.59
6. Step 6: Final answer
   x = 77,884.36