Finding the Fourth Proportional to 58,559.47, 87,821.07 and 21,114.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,559.47 : 87,821.07 = 21,114.72 : x
2. Step 2: Convert to fraction form
   58,559.47/87,821.07 = 21,114.72/x
3. Step 3: Cross multiply
   58,559.47x = 87,821.07 × 21,114.72
4. Step 4: Simplify right side
   58,559.47x = 1,854,317,303.15
5. Step 5: Solve for x
   x = 1,854,317,303.15/58,559.47
6. Step 6: Final answer
   x = 31,665.54