Finding the Fourth Proportional to 76,740.83, 105,898.23 and 42,284.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,740.83 : 105,898.23 = 42,284.49 : x
2. Step 2: Convert to fraction form
   76,740.83/105,898.23 = 42,284.49/x
3. Step 3: Cross multiply
   76,740.83x = 105,898.23 × 42,284.49
4. Step 4: Simplify right side
   76,740.83x = 4,477,852,382.71
5. Step 5: Solve for x
   x = 4,477,852,382.71/76,740.83
6. Step 6: Final answer
   x = 58,350.33