Finding the Fourth Proportional to 76,233.60, 105,204.67 and 42,238.90

Step by Step Solution

1. Step 1: Write the proportion equation
   76,233.60 : 105,204.67 = 42,238.90 : x
2. Step 2: Convert to fraction form
   76,233.60/105,204.67 = 42,238.90/x
3. Step 3: Cross multiply
   76,233.60x = 105,204.67 × 42,238.90
4. Step 4: Simplify right side
   76,233.60x = 4,443,729,876.40
5. Step 5: Solve for x
   x = 4,443,729,876.40/76,233.60
6. Step 6: Final answer
   x = 58,290.96