Finding the Fourth Proportional to 76,618.39, 105,734.34 and 42,167.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,618.39 : 105,734.34 = 42,167.09 : x
2. Step 2: Convert to fraction form
   76,618.39/105,734.34 = 42,167.09/x
3. Step 3: Cross multiply
   76,618.39x = 105,734.34 × 42,167.09
4. Step 4: Simplify right side
   76,618.39x = 4,458,508,902.20
5. Step 5: Solve for x
   x = 4,458,508,902.20/76,618.39
6. Step 6: Final answer
   x = 58,191.11