Finding the Fourth Proportional to 76,367.15, 105,387.23 and 42,375.77

Step by Step Solution

1. Step 1: Write the proportion equation
   76,367.15 : 105,387.23 = 42,375.77 : x
2. Step 2: Convert to fraction form
   76,367.15/105,387.23 = 42,375.77/x
3. Step 3: Cross multiply
   76,367.15x = 105,387.23 × 42,375.77
4. Step 4: Simplify right side
   76,367.15x = 4,465,865,019.42
5. Step 5: Solve for x
   x = 4,465,865,019.42/76,367.15
6. Step 6: Final answer
   x = 58,478.88