Finding the Fourth Proportional to 76,258.28, 105,242.72 and 42,277.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,258.28 : 105,242.72 = 42,277.42 : x
2. Step 2: Convert to fraction form
   76,258.28/105,242.72 = 42,277.42/x
3. Step 3: Cross multiply
   76,258.28x = 105,242.72 × 42,277.42
4. Step 4: Simplify right side
   76,258.28x = 4,449,390,595.55
5. Step 5: Solve for x
   x = 4,449,390,595.55/76,258.28
6. Step 6: Final answer
   x = 58,346.33