Finding the Fourth Proportional to 76,742.28, 105,902.73 and 42,750.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,742.28 : 105,902.73 = 42,750.72 : x
2. Step 2: Convert to fraction form
   76,742.28/105,902.73 = 42,750.72/x
3. Step 3: Cross multiply
   76,742.28x = 105,902.73 × 42,750.72
4. Step 4: Simplify right side
   76,742.28x = 4,527,417,957.47
5. Step 5: Solve for x
   x = 4,527,417,957.47/76,742.28
6. Step 6: Final answer
   x = 58,995.09