Finding the Fourth Proportional to 76,363.02, 105,379.35 and 42,370.78

Step by Step Solution

1. Step 1: Write the proportion equation
   76,363.02 : 105,379.35 = 42,370.78 : x
2. Step 2: Convert to fraction form
   76,363.02/105,379.35 = 42,370.78/x
3. Step 3: Cross multiply
   76,363.02x = 105,379.35 × 42,370.78
4. Step 4: Simplify right side
   76,363.02x = 4,465,005,255.39
5. Step 5: Solve for x
   x = 4,465,005,255.39/76,363.02
6. Step 6: Final answer
   x = 58,470.78