Finding the Fourth Proportional to 53,147.25, 73,336.82 and 30,485.07

Step by Step Solution

1. Step 1: Write the proportion equation
   53,147.25 : 73,336.82 = 30,485.07 : x
2. Step 2: Convert to fraction form
   53,147.25/73,336.82 = 30,485.07/x
3. Step 3: Cross multiply
   53,147.25x = 73,336.82 × 30,485.07
4. Step 4: Simplify right side
   53,147.25x = 2,235,677,938.85
5. Step 5: Solve for x
   x = 2,235,677,938.85/53,147.25
6. Step 6: Final answer
   x = 42,065.73