Finding the Fourth Proportional to 76,667.34, 105,800.90 and 42,675.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,667.34 : 105,800.90 = 42,675.10 : x
2. Step 2: Convert to fraction form
   76,667.34/105,800.90 = 42,675.10/x
3. Step 3: Cross multiply
   76,667.34x = 105,800.90 × 42,675.10
4. Step 4: Simplify right side
   76,667.34x = 4,515,063,987.59
5. Step 5: Solve for x
   x = 4,515,063,987.59/76,667.34
6. Step 6: Final answer
   x = 58,891.62