Finding the Fourth Proportional to 76,583.50, 105,688.74 and 42,595.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,583.50 : 105,688.74 = 42,595.42 : x
2. Step 2: Convert to fraction form
   76,583.50/105,688.74 = 42,595.42/x
3. Step 3: Cross multiply
   76,583.50x = 105,688.74 × 42,595.42
4. Step 4: Simplify right side
   76,583.50x = 4,501,856,269.57
5. Step 5: Solve for x
   x = 4,501,856,269.57/76,583.50
6. Step 6: Final answer
   x = 58,783.63