Finding the Fourth Proportional to 76,200.99, 105,134.62 and 49,300.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,200.99 : 105,134.62 = 49,300.89 : x
2. Step 2: Convert to fraction form
   76,200.99/105,134.62 = 49,300.89/x
3. Step 3: Cross multiply
   76,200.99x = 105,134.62 × 49,300.89
4. Step 4: Simplify right side
   76,200.99x = 5,183,230,089.31
5. Step 5: Solve for x
   x = 5,183,230,089.31/76,200.99
6. Step 6: Final answer
   x = 68,020.51