Finding the Fourth Proportional to 58,081.68, 87,070.91 and 20,636.82

Step by Step Solution

1. Step 1: Write the proportion equation
   58,081.68 : 87,070.91 = 20,636.82 : x
2. Step 2: Convert to fraction form
   58,081.68/87,070.91 = 20,636.82/x
3. Step 3: Cross multiply
   58,081.68x = 87,070.91 × 20,636.82
4. Step 4: Simplify right side
   58,081.68x = 1,796,866,593.72
5. Step 5: Solve for x
   x = 1,796,866,593.72/58,081.68
6. Step 6: Final answer
   x = 30,936.89