Finding the Fourth Proportional to 56,825.63, 78,453 and 50,520.59

Step by Step Solution

1. Step 1: Write the proportion equation
   56,825.63 : 78,453 = 50,520.59 : x
2. Step 2: Convert to fraction form
   56,825.63/78,453 = 50,520.59/x
3. Step 3: Cross multiply
   56,825.63x = 78,453 × 50,520.59
4. Step 4: Simplify right side
   56,825.63x = 3,963,491,847.27
5. Step 5: Solve for x
   x = 3,963,491,847.27/56,825.63
6. Step 6: Final answer
   x = 69,748.31