Finding the Fourth Proportional to 76,452, 105,503.82 and 42,928.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,452 : 105,503.82 = 42,928.80 : x
2. Step 2: Convert to fraction form
   76,452/105,503.82 = 42,928.80/x
3. Step 3: Cross multiply
   76,452x = 105,503.82 × 42,928.80
4. Step 4: Simplify right side
   76,452x = 4,529,152,388.02
5. Step 5: Solve for x
   x = 4,529,152,388.02/76,452
6. Step 6: Final answer
   x = 59,241.78