Finding the Fourth Proportional to 76,393.46, 105,417.98 and 42,400.29

Step by Step Solution

1. Step 1: Write the proportion equation
   76,393.46 : 105,417.98 = 42,400.29 : x
2. Step 2: Convert to fraction form
   76,393.46/105,417.98 = 42,400.29/x
3. Step 3: Cross multiply
   76,393.46x = 105,417.98 × 42,400.29
4. Step 4: Simplify right side
   76,393.46x = 4,469,752,711.21
5. Step 5: Solve for x
   x = 4,469,752,711.21/76,393.46
6. Step 6: Final answer
   x = 58,509.63