Finding the Fourth Proportional to 53,118.91, 73,302.78 and 30,471.31

Step by Step Solution

1. Step 1: Write the proportion equation
   53,118.91 : 73,302.78 = 30,471.31 : x
2. Step 2: Convert to fraction form
   53,118.91/73,302.78 = 30,471.31/x
3. Step 3: Cross multiply
   53,118.91x = 73,302.78 × 30,471.31
4. Step 4: Simplify right side
   53,118.91x = 2,233,631,733.24
5. Step 5: Solve for x
   x = 2,233,631,733.24/53,118.91
6. Step 6: Final answer
   x = 42,049.65