Finding the Fourth Proportional to 58,017.76, 86,959.29 and 21,971.30

Step by Step Solution

1. Step 1: Write the proportion equation
   58,017.76 : 86,959.29 = 21,971.30 : x
2. Step 2: Convert to fraction form
   58,017.76/86,959.29 = 21,971.30/x
3. Step 3: Cross multiply
   58,017.76x = 86,959.29 × 21,971.30
4. Step 4: Simplify right side
   58,017.76x = 1,910,608,648.38
5. Step 5: Solve for x
   x = 1,910,608,648.38/58,017.76
6. Step 6: Final answer
   x = 32,931.44