Finding the Fourth Proportional to 65,725.80, 90,711 and 37,434.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,725.80 : 90,711 = 37,434.12 : x
2. Step 2: Convert to fraction form
   65,725.80/90,711 = 37,434.12/x
3. Step 3: Cross multiply
   65,725.80x = 90,711 × 37,434.12
4. Step 4: Simplify right side
   65,725.80x = 3,395,686,459.32
5. Step 5: Solve for x
   x = 3,395,686,459.32/65,725.80
6. Step 6: Final answer
   x = 51,664.44