Finding the Fourth Proportional to 76,271.14, 105,254.31 and 42,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,271.14 : 105,254.31 = 42,280.15 : x
2. Step 2: Convert to fraction form
   76,271.14/105,254.31 = 42,280.15/x
3. Step 3: Cross multiply
   76,271.14x = 105,254.31 × 42,280.15
4. Step 4: Simplify right side
   76,271.14x = 4,450,168,014.95
5. Step 5: Solve for x
   x = 4,450,168,014.95/76,271.14
6. Step 6: Final answer
   x = 58,346.68