Finding the Fourth Proportional to 91,776.49, 126,608.57 and 59,521.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,776.49 : 126,608.57 = 59,521.31 : x
2. Step 2: Convert to fraction form
   91,776.49/126,608.57 = 59,521.31/x
3. Step 3: Cross multiply
   91,776.49x = 126,608.57 × 59,521.31
4. Step 4: Simplify right side
   91,776.49x = 7,535,907,710.96
5. Step 5: Solve for x
   x = 7,535,907,710.96/91,776.49
6. Step 6: Final answer
   x = 82,111.53