Finding the Fourth Proportional to 69,926.15, 104,890.31 and 20,005.31

Step by Step Solution

1. Step 1: Write the proportion equation
   69,926.15 : 104,890.31 = 20,005.31 : x
2. Step 2: Convert to fraction form
   69,926.15/104,890.31 = 20,005.31/x
3. Step 3: Cross multiply
   69,926.15x = 104,890.31 × 20,005.31
4. Step 4: Simplify right side
   69,926.15x = 2,098,363,167.55
5. Step 5: Solve for x
   x = 2,098,363,167.55/69,926.15
6. Step 6: Final answer
   x = 30,008.28