Finding the Fourth Proportional to 58,521.87, 80,759.59 and 31,663.78

Step by Step Solution

1. Step 1: Write the proportion equation
   58,521.87 : 80,759.59 = 31,663.78 : x
2. Step 2: Convert to fraction form
   58,521.87/80,759.59 = 31,663.78/x
3. Step 3: Cross multiply
   58,521.87x = 80,759.59 × 31,663.78
4. Step 4: Simplify right side
   58,521.87x = 2,557,153,609.59
5. Step 5: Solve for x
   x = 2,557,153,609.59/58,521.87
6. Step 6: Final answer
   x = 43,695.69