Finding the Fourth Proportional to 76,667.90, 105,802.90 and 42,676.76

Step by Step Solution

1. Step 1: Write the proportion equation
   76,667.90 : 105,802.90 = 42,676.76 : x
2. Step 2: Convert to fraction form
   76,667.90/105,802.90 = 42,676.76/x
3. Step 3: Cross multiply
   76,667.90x = 105,802.90 × 42,676.76
4. Step 4: Simplify right side
   76,667.90x = 4,515,325,128.42
5. Step 5: Solve for x
   x = 4,515,325,128.42/76,667.90
6. Step 6: Final answer
   x = 58,894.60