Finding the Fourth Proportional to 76,379.92, 105,404.20 and 42,845.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,379.92 : 105,404.20 = 42,845.84 : x
2. Step 2: Convert to fraction form
   76,379.92/105,404.20 = 42,845.84/x
3. Step 3: Cross multiply
   76,379.92x = 105,404.20 × 42,845.84
4. Step 4: Simplify right side
   76,379.92x = 4,516,131,488.53
5. Step 5: Solve for x
   x = 4,516,131,488.53/76,379.92
6. Step 6: Final answer
   x = 59,127.21