Finding the Fourth Proportional to 90,931.82, 136,308.42 and 43,533.45

Step by Step Solution

1. Step 1: Write the proportion equation
   90,931.82 : 136,308.42 = 43,533.45 : x
2. Step 2: Convert to fraction form
   90,931.82/136,308.42 = 43,533.45/x
3. Step 3: Cross multiply
   90,931.82x = 136,308.42 × 43,533.45
4. Step 4: Simplify right side
   90,931.82x = 5,933,975,786.65
5. Step 5: Solve for x
   x = 5,933,975,786.65/90,931.82
6. Step 6: Final answer
   x = 65,257.42