Finding the Fourth Proportional to 76,379.83, 105,395.51 and 42,379.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,379.83 : 105,395.51 = 42,379.47 : x
2. Step 2: Convert to fraction form
   76,379.83/105,395.51 = 42,379.47/x
3. Step 3: Cross multiply
   76,379.83x = 105,395.51 × 42,379.47
4. Step 4: Simplify right side
   76,379.83x = 4,466,605,960.13
5. Step 5: Solve for x
   x = 4,466,605,960.13/76,379.83
6. Step 6: Final answer
   x = 58,478.87