Finding the Fourth Proportional to 53,486.96, 80,308.20 and 39,490.16

Step by Step Solution

1. Step 1: Write the proportion equation
   53,486.96 : 80,308.20 = 39,490.16 : x
2. Step 2: Convert to fraction form
   53,486.96/80,308.20 = 39,490.16/x
3. Step 3: Cross multiply
   53,486.96x = 80,308.20 × 39,490.16
4. Step 4: Simplify right side
   53,486.96x = 3,171,383,667.31
5. Step 5: Solve for x
   x = 3,171,383,667.31/53,486.96
6. Step 6: Final answer
   x = 59,292.65