Finding the Fourth Proportional to 76,667.52, 105,806.16 and 42,675.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,667.52 : 105,806.16 = 42,675.60 : x
2. Step 2: Convert to fraction form
   76,667.52/105,806.16 = 42,675.60/x
3. Step 3: Cross multiply
   76,667.52x = 105,806.16 × 42,675.60
4. Step 4: Simplify right side
   76,667.52x = 4,515,341,361.70
5. Step 5: Solve for x
   x = 4,515,341,361.70/76,667.52
6. Step 6: Final answer
   x = 58,895.10