Finding the Fourth Proportional to 31,109.48, 46,692.28 and 21,089.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.48 : 46,692.28 = 21,089.98 : x
2. Step 2: Convert to fraction form
   31,109.48/46,692.28 = 21,089.98/x
3. Step 3: Cross multiply
   31,109.48x = 46,692.28 × 21,089.98
4. Step 4: Simplify right side
   31,109.48x = 984,739,251.35
5. Step 5: Solve for x
   x = 984,739,251.35/31,109.48
6. Step 6: Final answer
   x = 31,653.99