Finding the Fourth Proportional to 76,383.48, 105,410.33 and 42,394.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,383.48 : 105,410.33 = 42,394.15 : x
2. Step 2: Convert to fraction form
   76,383.48/105,410.33 = 42,394.15/x
3. Step 3: Cross multiply
   76,383.48x = 105,410.33 × 42,394.15
4. Step 4: Simplify right side
   76,383.48x = 4,468,781,341.57
5. Step 5: Solve for x
   x = 4,468,781,341.57/76,383.48
6. Step 6: Final answer
   x = 58,504.55