Finding the Fourth Proportional to 53,145.32, 73,332.86 and 30,485.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,145.32 : 73,332.86 = 30,485.25 : x
2. Step 2: Convert to fraction form
   53,145.32/73,332.86 = 30,485.25/x
3. Step 3: Cross multiply
   53,145.32x = 73,332.86 × 30,485.25
4. Step 4: Simplify right side
   53,145.32x = 2,235,570,417.89
5. Step 5: Solve for x
   x = 2,235,570,417.89/53,145.32
6. Step 6: Final answer
   x = 42,065.24