Finding the Fourth Proportional to 76,291, 105,288.06 and 42,763.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,291 : 105,288.06 = 42,763.48 : x
2. Step 2: Convert to fraction form
   76,291/105,288.06 = 42,763.48/x
3. Step 3: Cross multiply
   76,291x = 105,288.06 × 42,763.48
4. Step 4: Simplify right side
   76,291x = 4,502,483,848.05
5. Step 5: Solve for x
   x = 4,502,483,848.05/76,291
6. Step 6: Final answer
   x = 59,017.23