Finding the Fourth Proportional to 76,756.81, 105,932.18 and 42,770.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,756.81 : 105,932.18 = 42,770.83 : x
2. Step 2: Convert to fraction form
   76,756.81/105,932.18 = 42,770.83/x
3. Step 3: Cross multiply
   76,756.81x = 105,932.18 × 42,770.83
4. Step 4: Simplify right side
   76,756.81x = 4,530,806,518.79
5. Step 5: Solve for x
   x = 4,530,806,518.79/76,756.81
6. Step 6: Final answer
   x = 59,028.08