Finding the Fourth Proportional to 72,174.42, 99,620.82 and 49,517.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,174.42 : 99,620.82 = 49,517.10 : x
2. Step 2: Convert to fraction form
   72,174.42/99,620.82 = 49,517.10/x
3. Step 3: Cross multiply
   72,174.42x = 99,620.82 × 49,517.10
4. Step 4: Simplify right side
   72,174.42x = 4,932,934,106.02
5. Step 5: Solve for x
   x = 4,932,934,106.02/72,174.42
6. Step 6: Final answer
   x = 68,347.40