Finding the Fourth Proportional to 58,111.32, 87,136.74 and 20,665.94

Step by Step Solution

1. Step 1: Write the proportion equation
   58,111.32 : 87,136.74 = 20,665.94 : x
2. Step 2: Convert to fraction form
   58,111.32/87,136.74 = 20,665.94/x
3. Step 3: Cross multiply
   58,111.32x = 87,136.74 × 20,665.94
4. Step 4: Simplify right side
   58,111.32x = 1,800,762,146.83
5. Step 5: Solve for x
   x = 1,800,762,146.83/58,111.32
6. Step 6: Final answer
   x = 30,988.15