Finding the Fourth Proportional to 76,116.59, 105,042.42 and 42,124.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,116.59 : 105,042.42 = 42,124.20 : x
2. Step 2: Convert to fraction form
   76,116.59/105,042.42 = 42,124.20/x
3. Step 3: Cross multiply
   76,116.59x = 105,042.42 × 42,124.20
4. Step 4: Simplify right side
   76,116.59x = 4,424,828,105.52
5. Step 5: Solve for x
   x = 4,424,828,105.52/76,116.59
6. Step 6: Final answer
   x = 58,132.25