Finding the Fourth Proportional to 53,520.16, 80,095.40 and 42,965.04

Step by Step Solution

1. Step 1: Write the proportion equation
   53,520.16 : 80,095.40 = 42,965.04 : x
2. Step 2: Convert to fraction form
   53,520.16/80,095.40 = 42,965.04/x
3. Step 3: Cross multiply
   53,520.16x = 80,095.40 × 42,965.04
4. Step 4: Simplify right side
   53,520.16x = 3,441,302,064.82
5. Step 5: Solve for x
   x = 3,441,302,064.82/53,520.16
6. Step 6: Final answer
   x = 64,299.17