Finding the Fourth Proportional to 49,123.57, 73,623.72 and 21,010.63

Step by Step Solution

1. Step 1: Write the proportion equation
   49,123.57 : 73,623.72 = 21,010.63 : x
2. Step 2: Convert to fraction form
   49,123.57/73,623.72 = 21,010.63/x
3. Step 3: Cross multiply
   49,123.57x = 73,623.72 × 21,010.63
4. Step 4: Simplify right side
   49,123.57x = 1,546,880,634.87
5. Step 5: Solve for x
   x = 1,546,880,634.87/49,123.57
6. Step 6: Final answer
   x = 31,489.58