Finding the Fourth Proportional to 525,679.94, 788,519.83 and 126,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   525,679.94 : 788,519.83 = 126,320.72 : x
2. Step 2: Convert to fraction form
   525,679.94/788,519.83 = 126,320.72/x
3. Step 3: Cross multiply
   525,679.94x = 788,519.83 × 126,320.72
4. Step 4: Simplify right side
   525,679.94x = 99,606,388,638.33
5. Step 5: Solve for x
   x = 99,606,388,638.33/525,679.94
6. Step 6: Final answer
   x = 189,481.05