Finding the Fourth Proportional to 76,601.48, 105,697.06 and 42,605.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,601.48 : 105,697.06 = 42,605.48 : x
2. Step 2: Convert to fraction form
   76,601.48/105,697.06 = 42,605.48/x
3. Step 3: Cross multiply
   76,601.48x = 105,697.06 × 42,605.48
4. Step 4: Simplify right side
   76,601.48x = 4,503,273,975.89
5. Step 5: Solve for x
   x = 4,503,273,975.89/76,601.48
6. Step 6: Final answer
   x = 58,788.34