Finding the Fourth Proportional to 76,766.78, 115,162.50 and 32,400.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,766.78 : 115,162.50 = 32,400.12 : x
2. Step 2: Convert to fraction form
   76,766.78/115,162.50 = 32,400.12/x
3. Step 3: Cross multiply
   76,766.78x = 115,162.50 × 32,400.12
4. Step 4: Simplify right side
   76,766.78x = 3,731,278,819.50
5. Step 5: Solve for x
   x = 3,731,278,819.50/76,766.78
6. Step 6: Final answer
   x = 48,605.38