Finding the Fourth Proportional to 76,751.72, 115,150.82 and 39,338.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,751.72 : 115,150.82 = 39,338.31 : x
2. Step 2: Convert to fraction form
   76,751.72/115,150.82 = 39,338.31/x
3. Step 3: Cross multiply
   76,751.72x = 115,150.82 × 39,338.31
4. Step 4: Simplify right side
   76,751.72x = 4,529,838,241.31
5. Step 5: Solve for x
   x = 4,529,838,241.31/76,751.72
6. Step 6: Final answer
   x = 59,019.37