Finding the Fourth Proportional to 58,748.78, 81,073.37 and 31,891.30

Step by Step Solution

1. Step 1: Write the proportion equation
   58,748.78 : 81,073.37 = 31,891.30 : x
2. Step 2: Convert to fraction form
   58,748.78/81,073.37 = 31,891.30/x
3. Step 3: Cross multiply
   58,748.78x = 81,073.37 × 31,891.30
4. Step 4: Simplify right side
   58,748.78x = 2,585,535,041.73
5. Step 5: Solve for x
   x = 2,585,535,041.73/58,748.78
6. Step 6: Final answer
   x = 44,010.02