Finding the Fourth Proportional to 125,522, 173,235.72 and 72,530

Step by Step Solution

1. Step 1: Write the proportion equation
   125,522 : 173,235.72 = 72,530 : x
2. Step 2: Convert to fraction form
   125,522/173,235.72 = 72,530/x
3. Step 3: Cross multiply
   125,522x = 173,235.72 × 72,530
4. Step 4: Simplify right side
   125,522x = 12,564,786,771.60
5. Step 5: Solve for x
   x = 12,564,786,771.60/125,522
6. Step 6: Final answer
   x = 100,100.28