Finding the Fourth Proportional to 58,111.68, 87,209.54 and 20,672.06

Step by Step Solution

1. Step 1: Write the proportion equation
   58,111.68 : 87,209.54 = 20,672.06 : x
2. Step 2: Convert to fraction form
   58,111.68/87,209.54 = 20,672.06/x
3. Step 3: Cross multiply
   58,111.68x = 87,209.54 × 20,672.06
4. Step 4: Simplify right side
   58,111.68x = 1,802,801,113.16
5. Step 5: Solve for x
   x = 1,802,801,113.16/58,111.68
6. Step 6: Final answer
   x = 31,023.04