Finding the Fourth Proportional to 52,059.72, 78,104.14 and 20,916.84

Step by Step Solution

1. Step 1: Write the proportion equation
   52,059.72 : 78,104.14 = 20,916.84 : x
2. Step 2: Convert to fraction form
   52,059.72/78,104.14 = 20,916.84/x
3. Step 3: Cross multiply
   52,059.72x = 78,104.14 × 20,916.84
4. Step 4: Simplify right side
   52,059.72x = 1,633,691,799.72
5. Step 5: Solve for x
   x = 1,633,691,799.72/52,059.72
6. Step 6: Final answer
   x = 31,381.11