Finding the Fourth Proportional to 76,426.42, 105,468.88 and 42,434.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,426.42 : 105,468.88 = 42,434.42 : x
2. Step 2: Convert to fraction form
   76,426.42/105,468.88 = 42,434.42/x
3. Step 3: Cross multiply
   76,426.42x = 105,468.88 × 42,434.42
4. Step 4: Simplify right side
   76,426.42x = 4,475,510,750.85
5. Step 5: Solve for x
   x = 4,475,510,750.85/76,426.42
6. Step 6: Final answer
   x = 58,559.73