Finding the Fourth Proportional to 79,426.31, 109,632.92 and 51,132

Step by Step Solution

1. Step 1: Write the proportion equation
   79,426.31 : 109,632.92 = 51,132 : x
2. Step 2: Convert to fraction form
   79,426.31/109,632.92 = 51,132/x
3. Step 3: Cross multiply
   79,426.31x = 109,632.92 × 51,132
4. Step 4: Simplify right side
   79,426.31x = 5,605,750,209.78
5. Step 5: Solve for x
   x = 5,605,750,209.78/79,426.31
6. Step 6: Final answer
   x = 70,578.00