Finding the Fourth Proportional to 76,228.52, 105,196.26 and 42,238.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,228.52 : 105,196.26 = 42,238.12 : x
2. Step 2: Convert to fraction form
   76,228.52/105,196.26 = 42,238.12/x
3. Step 3: Cross multiply
   76,228.52x = 105,196.26 × 42,238.12
4. Step 4: Simplify right side
   76,228.52x = 4,443,292,253.43
5. Step 5: Solve for x
   x = 4,443,292,253.43/76,228.52
6. Step 6: Final answer
   x = 58,289.11