Finding the Fourth Proportional to 76,371.30, 105,392.94 and 42,379.92

Step by Step Solution

1. Step 1: Write the proportion equation
   76,371.30 : 105,392.94 = 42,379.92 : x
2. Step 2: Convert to fraction form
   76,371.30/105,392.94 = 42,379.92/x
3. Step 3: Cross multiply
   76,371.30x = 105,392.94 × 42,379.92
4. Step 4: Simplify right side
   76,371.30x = 4,466,544,365.76
5. Step 5: Solve for x
   x = 4,466,544,365.76/76,371.30
6. Step 6: Final answer
   x = 58,484.59