Finding the Fourth Proportional to 72,354.15, 99,860.76 and 49,674.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,354.15 : 99,860.76 = 49,674.60 : x
2. Step 2: Convert to fraction form
   72,354.15/99,860.76 = 49,674.60/x
3. Step 3: Cross multiply
   72,354.15x = 99,860.76 × 49,674.60
4. Step 4: Simplify right side
   72,354.15x = 4,960,543,308.70
5. Step 5: Solve for x
   x = 4,960,543,308.70/72,354.15
6. Step 6: Final answer
   x = 68,559.21