Finding the Fourth Proportional to 53,485.48, 73,807.49 and 30,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,485.48 : 73,807.49 = 30,828.50 : x
2. Step 2: Convert to fraction form
   53,485.48/73,807.49 = 30,828.50/x
3. Step 3: Cross multiply
   53,485.48x = 73,807.49 × 30,828.50
4. Step 4: Simplify right side
   53,485.48x = 2,275,374,146.92
5. Step 5: Solve for x
   x = 2,275,374,146.92/53,485.48
6. Step 6: Final answer
   x = 42,541.91