Finding the Fourth Proportional to 76,124.20, 105,049.22 and 42,134.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,124.20 : 105,049.22 = 42,134.08 : x
2. Step 2: Convert to fraction form
   76,124.20/105,049.22 = 42,134.08/x
3. Step 3: Cross multiply
   76,124.20x = 105,049.22 × 42,134.08
4. Step 4: Simplify right side
   76,124.20x = 4,426,152,239.42
5. Step 5: Solve for x
   x = 4,426,152,239.42/76,124.20
6. Step 6: Final answer
   x = 58,143.83