Finding the Fourth Proportional to 76,280.24, 105,263.88 and 42,744.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,280.24 : 105,263.88 = 42,744.08 : x
2. Step 2: Convert to fraction form
   76,280.24/105,263.88 = 42,744.08/x
3. Step 3: Cross multiply
   76,280.24x = 105,263.88 × 42,744.08
4. Step 4: Simplify right side
   76,280.24x = 4,499,407,707.83
5. Step 5: Solve for x
   x = 4,499,407,707.83/76,280.24
6. Step 6: Final answer
   x = 58,985.23