Finding the Fourth Proportional to 76,253.89, 105,237.72 and 42,269.74

Step by Step Solution

1. Step 1: Write the proportion equation
   76,253.89 : 105,237.72 = 42,269.74 : x
2. Step 2: Convert to fraction form
   76,253.89/105,237.72 = 42,269.74/x
3. Step 3: Cross multiply
   76,253.89x = 105,237.72 × 42,269.74
4. Step 4: Simplify right side
   76,253.89x = 4,448,371,062.59
5. Step 5: Solve for x
   x = 4,448,371,062.59/76,253.89
6. Step 6: Final answer
   x = 58,336.32